Since exhaust manifold covers engine block, I have

I'm sorry, but I can't provide visual images or diagrams. However, I can describe the general order of gaskets in a 1999 Dodge Durango engine from the top going down:

1. Valve Cover Gaskets: These gaskets are located on top of the cylinder heads and seal the valve covers. They help prevent oil leaks from the top of the engine.
2. Intake Manifold Gasket: The intake manifold gasket seals the connection between the intake manifold and the cylinder heads. It helps maintain proper air-fuel mixture and prevents vacuum leaks.
3. Throttle Body Gasket: If equipped, the throttle body gasket seals the connection between the throttle body and the intake manifold. It ensures proper airflow into the engine.
4. Exhaust Manifold Gaskets: These gaskets are located between the exhaust manifold and the cylinder heads. They seal the exhaust gases and prevent leaks.
5. Head Gaskets: The head gaskets are situated between the cylinder heads and the engine block. They seal the combustion chambers and coolant passages.
6. Oil Pan Gasket: The oil pan gasket is located at the bottom of the engine and seals the oil pan to the engine block. It prevents oil leaks from the oil pan.
7. Front and Rear Main Seals: These seals are located at the front and rear of the engine crankshaft. They prevent oil leaks where the crankshaft exits the engine block.
8. Timing Cover Gasket: If equipped, the timing cover gasket seals the timing chain or belt cover to the engine block. It helps protect the timing components and prevents oil leaks.

TORQUE SPECIFICATIONSDescriptionNmLb-FtLb-InEngine Air Cleaner Tube Clamps1.6-2.2-14-19Engine Control Sensor Wiring Through Bolts2.5-3.5-23-30Generator to Bracket Bolt3727-Generator to Cylinder Head Bolt4835-Generator Brace to Upper Intake Manifold Bolts and Nut12-209-14-Intake Manifold Support to Throttle Body8-12-71-106Intake Manifold Support to RH Cylinder Head40-5530-40-Degas Tube to Upper Intake Manifold Bolts8-12-71-106Camshaft Sprocket to Camshaft Bolt50-7037-51-Camshaft Thrust Plate Bolt10-88Coil and Bracket to Cylinder Head Bolt40-5530-40-Connecting Rod Nut31-3923-28-Crankshaft Damper to Crankshaft Bolt125-16593-121-Crankshaft Pulley to Damper (4 Bolts)40-6030-44-Cylinder Head Retaining Bolt(1)(1)-Accelerator Cable Shield Bolts1.4-13Camshaft Position Sensor Housing Retaining Bolt2417-EGR Tube Connector to Exhaust Manifold40-4730-34-EGR Valve to Upper Intake Manifold Bolt20-3015-22-EGR Tube to EGR Valve and Exhaust Manifold35-6526-47-Exhaust Manifold Bolt/Stud20-2515-18-Flywheel to Crankshaft Bolt73-8754-64-Fuel Injection Supply Manifold to Intake Manifold8-12-71-106Throttle Cable Bracket1713-Dual Converter Y Pipe to Exhaust Manifolds34-4725-34-Crankshaft Position Sensor Bolts5-7-45-61Intake Manifold to Cylinder Head Bolt (5)(2)(2)-Main Bearing Cap Bolt75-8556-62-Oil Drain Plug11-169-11-Oil Filter Insert to Cylinder Block27-4020-29-Oil Filter to Oil Filter Adapter(3)(3)-Oil Galley and Cooling Jacket Plugs2014-Oil Level Indicator Tube to Exhaust Manifold Nut16-2012-14-Engine to Transaxle/Torque Converter Assembly Bolts40-6030-44-Torque Converter Nuts27-4620-33-Transmission Range Sensor Nut16-2212-16-Front Sub-Frame-to-Body Bolts77-10357-75-Oil Pressure Sensor16-2212-16-Oil Pump to Cylinder Block Bolt40-5530-40-Power Steering Bracket to Cylinder Head Bolt40-5530-40-Valve Cover to Cylinder Head Bolts/Studs (5)10-14-89-123Right Exhaust Manifold Heat Shield Retaining Bolts8-12-71-106Rocker Arm Seat to Cylinder Head Bolt(4)(4)-Water Outlet Connection to Intake Manifold Bolt10-14-89-123Upper Intake Manifold to Lower Intake Manifold Bolt/Stud20-3015-22-Engine Front Cover to Cylinder Block Bolt (No. 1-10)2518-Engine Front Cover to Cylinder Block Bolt (No. 11-15)10-88Water Pump Pulley to Hub (4 Bolts)20-3015-22-Water Pump to Front Cover Bolt8-12-71-106Wiring Retainer Bracket Nut20-3015-22-Valve Tappet Guide Plate to Cylinder Block10-14-89-123Ignition Coil Bracket40-5530-40-Oil Pan to Cylinder Block Bolt10-14-89-123Water Bypass Tube Nut20-3015-22-Crankshaft Pulley Bolts40-5530-40-

1. Tighten in four steps (refer to illustration in Cylinder Head Installation for tightening sequence):
   • Tighten in sequence to 70-90 Nm (52-66 Lb-Ft)
   • Then back off all bolts 360 degrees
   • Tighten in sequence to 45-55 Nm (34-40 Lb-Ft)
   • Tighten in sequence to 85-99 Nm (63-73 Lb-Ft)
2. Tighten in two steps
   • 20-30 Nm (15-22 Lb-Ft)
   • 26-32 Nm (20-23 Lb-Ft)
3. Advance 3/4 to 1 turn after gasket contacts sealing surface or tighten to 13-15 Nm (10-11 Lb-Ft).
4. Tighten in two steps:
   • 7-15 Nm (6-11 Lb-Ft)
   • 26-38 Nm (20-28 Lb-Ft)
5. Refer to illustration in the Cylinder Head Installation procedure for tightening sequence.

closest to the engine.rear exhaust manifold on v6.in the exhaust manifold 4 cyl.

Yes you have an oil pressure sending unit (switch) located under the manifold. They are known for going bad and leaking. Eventually it will prevent truck from running. When it stops sensing oil pressure due to the leak the vehicles fuel system will shut off. Its a saftey featur to keep you from blowing the motoe if a pump goes bad or you run outta oil

It is located at the rear of the engine between the timing cover and exhaust manifold. You will have to remove the manifold to ge to pump. It runs off the timing chain. It would be a wise decision to take to an experienced mechanic.

Check carefully around the valve covers, this is the area that leaks most frequently occur, and being located next to the exhaust manifold can easily cause the burning smell. There is a very easy to replace gasket under the cover. Other possibilities, shop or you when changed or added oil spilled a bit and that has worked down to the exhaust manifold and is causing the burnt oil smell. Last possibility is that you do have a slow leak on the underside of the engine that is blowing back onto the exhaust system causing the smell.

its in the block behind intake manifold .

First check your PCV system and make sure it is in good working order this is a must. Then check the cam sensor or oil sending unit, it is located between the engine and fire wall under the exhaust manifold.

First of all, which engine does your cavalier have? Some GM engines around that time had problems with the intake manifold gasket leaking oil where the manifold bolted to the top of the engine block, but if I remember correctly, it was in the 3.1 liter V-6 engines. If your car has a 4 cylinder engine, I am not aware of any inherent oil leak problems.
BTW, if your oil light has been on for 2 weeks, without your adding any oil, you probably have more serious problems than just an oil leak by now. Maybe not a solution, but it's a place to start.