Just so you know, there isnt any sensor in the distributors of the 4 bangers, they are simply a way to direct the spark. All timing is handled by the CPS and the ignition module, turning the distributor will do nothing. Glad to hear you found the problem, I was going to suggest swapping the correct flywheel onto the motor. 2 completely different systems, TBI is old school Bendix while MPI is Chrysler. Entirely different signals between the 2 systems.
90 YJ 5.2 Magnum, AX-15, 231 SYE'd
D44 front, welded/trussed AMC20HD rear. 4.56 gears soonish.
Western 6 lug aluminum wheels, with 35x12.50x15 Wrangler MTRs
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