I have a 1988 Jeep Wrangler 4.2 3-speed automatic & a 1991 Jeep Cherokee 4.0 5-speed/2WD.  My question is this... the wrangler has a carb & the cherokee is fuel injected.  Mopar sells a kit for converting the 4.2 to fuel injection.  Can I install the fuel injection system from the 4.0 onto the 4.2 ?   and knowing that I need a new damper kit P5249610--(I have Mopar's Jeep engines book)  In looking through the conversion info and the service manual for the 4.0 Cherokee, I notice that the 4.0 uses a sensor on the flywheel instead of a crank shaft positioning sensor on the damper.  Can I install a C.P. sensor and damper and use the wiring for the flywheel sensor?  Will the computer for the 91 4.0 recognize a C.P. sensor/vibration damper signal?  Are the kit computer and the vehicle computer the same?  What else will I have to modify or install to make this work ?

I have contacted Mopar Performance Parts Technical Assistance Hotline, and they were absolutely no help.  They said they do not do swaps.