the only one i have done was for my buddys 55 chevy. he used a 95 LT1 with a 700R4 transmission. the controller and harness used was from those guys in mena arkansas. that cost around $1100. i also used a fsm for a 95 cadillac. it uses the same engine, and the wiring scematics came in handy more than once. also, i made a bunch of phone calls to those guys and they were more than glad to help out with my stupid questions. i'm pretty sure they make a harness and controller for a gen 3 hemi now. in my opinion, it is not an easy swap for a person who is marginal in wiring skills. i enjoy wiring, and learned a lot from this experiance. although i told my buddy "i learned stuff i didn't wanna know" being as it was gm related. if you are up for a real challenge, go for it. just remember, ALL connections must be bullet proof, because if they are substandard, you will have no end to chasing gremlins.