Originally Posted by j_reagan
yes it is you need a new pcm for the engine. correct engine mounts, radiator, and other small things you can use your old tranny but you need a new clutch, flywheel, and some other stuff. just find one from a guy swaping a 5.0 so you can just drop it in. fairly easy swap
negative. the 4.0 doesn't share a transmission with any other motor, except the 2.9.
you will need the motor, tranny, mounts, wiring, computer, hoses, cables, etc.