Is there a difference between a1989 and a 1998 Jeep Cherokee flywheel

What engine, I toss my engine coin and land on 4.0L

10 long years, (hopeless really)
first off the 89 runs a FRENCh RENIX ecu, EFI injection
so the 1998 does not use this ECU ever ,that means all that CKP sensor stuff
is ALL DIFFERENT. the tone wheel marks are NOT THE SAME.

jeep dealer pages show you what fits. ever think to try jeep.?

this years 1988 to 1998 are turbulent years, 1996 is OBD2 and big change then 89 year, there.

1. The Chrysler buy out.
2. and EPA rules.

• 1986 - Renix TBI available on Jeep 2.5 L four-cylinder engines. (early EFI, digital , not analog like relic VW's, in the past 1970s era) All Renix is NON OBD systems. up to 1990 inclusive)
• 1987 - The new Renix controlled 4.0 L six-cylinder engine was rated at 173 hp (129 kW; 175 PS) and 220 lb·ft (298 N·m) of torque.
• 1988 - 4.0 L output increased to 177 hp) and 224 lb·ft of torque now, due to higher compression ratio.
• 1989 -90 Changed to French Renix MPFI. (multipoint fuel injection) now called MPI.
• 1991 - 1st OBD, Chrysler Corporation system ( the above Renix control system is upgraded (trash canned), to USA OBD-I-compliant control electronics, the Chrysler HO EFI) with a working (SHOCK?) CEL lamp. + key trick works now.
• (and SBEC-I or II ECU's 91-92 years) The key trick works starting in 1991.
• 1993 are OBD1, and all good over the counter tools support it.
• 1996 are OBD2, USA compliant, (EPA) and now all scan tools work here, (EPA law dictated that) and USA invented OBD2,