The flywheel and starter have to be matched whichever you use. If you are putting MPFI on this jeep use the flywheel for the AX15 donor as the CPS reads the notches in the flywheel. I've read that the clutch and pressure plate should match the transmission but I'm not sure how compatible the 4.2L flywheel is with that set up.
'84 CJ-7: Yota axles (spartan locked front, e-locked rear) 4" BDS, 1" Daystar & 3/8" shackle lifts, 35" X-Terrains on steelies, YJ Tub & family roll bar, heater blower upgrade, 4.2L w/MC2100 & Team Rush, Warn 8274. Rebuilt 4.2/4.0 hybrid, AX15 and twin sticks/clocking ring waiting to go in.
The advertised position for a topless, dirty jeep girl has been filled......by my wife. Thanks to all that applied.
<------------and yes, that is her. :-D