I have a dodge magnun and have replaced the front linkage to sway

Sway bars are installed by removing your factory end links and sway bar. Re-install the new bushings and position your new sway bar on the vehicle in the OEM location and secure it with the same bolts.

That is strange. Typically you are looking for bushings. but sometimes the links, washers, bolts and nuts need replacement also. Moog makes what you need, aftermarket and the dealer sells what you need. I prefer aftermarket, it usually lasts longer.
Try another parts store, what you seek should be in suspension parts...

yes they are the same. 8 months sounds premature, but if it was an inexpensive brand X part they used it is possible.

I had the same problem. It was the front sway bar bushings. I took it to the dealer when it was still under warrantee. The replaced everything from struts to the steering linkage. And it still made the annoying knocking noise. I was changing the oil one day and while I was under the car I started looking where the noise was coming from. I grabbed the sway bar and pulled on it. It was loose. I bought bushings for about $12 and that fixed it.
Hope this helps

The sway bar linkage probably came undone on one of the sides. Wikipedia has a picture of what your sway bar linkage may look like:

http://en.wikipedia.org/wiki/Sway_bar

That is a picture of a Porsche sway bar, but the idea is the same. Make sure all bolts are tight and that one end is not missing the linkage that connects it to the spring/strut. The grinding of the brakes may be the sound of the linkage piece touching the rotor. Sway bar is a logical solution to both issues.

If that doesn't fix the issue, put the front end of the truck on blocks or jack stands and have somebody wiggle the tire up/down and side to side while you inspect the mechanical components underneath. Other things to check may be the ball joints, tie rod ends and suspension bits.

The sway bar bushings are under the large clamps that hold the bar to the frame. The ends of the sway bar are connected to the struts by the sway bar links. When the links wear out, they clunk--not squeak. The bushings are under the retainer in the pic below.

may be boll joint
or sway bar link .

It is the Front Sway bar linkage.
Dealer item only at the moment. 63.00 each 135.00 with tax.
Replace the linkage and the problem will be solved.

Had similar problem with 2003 Dodge GC. Replaced the parts you mention + rack & pinion, then to fix the now noticable whining noise, replaced power steering pump and pulley. Fortunately was under an extended warrentee at 46k miles.

The bushings for your sway bar is most likely worn out.