ok guys i have a 91 comanche with a blown up 4.0. i also have a 2000 xj with 4.0 i have totaled xj twice now and the body is shot but drivetrain is still strong. i wanna pull motor for mache but dont no how big of a job it is. i know the heads are different and the xj has the obd2 vs the manches obd1 but can i just take the comp from the xj and install in mj? im trying to spend as little cash on this project as i can. also would it be easyer to swap the motor trans and tranfercase and just the motors? i beleave both have the same trans behind them. any help would be awesome guys...