[UncleBob]

different states have different regulations on this. As a general rule, what you want to do falls under "kit car" regulations, and I believe most states go something like, you must use a drive train from a newer car in an older car....IE, you must upgrade, never down grade. You also must have ALL of the emissions equipment incorperated with the swap

As for harness', nothing will swap over directly. You will be taking every single little scrap of wire, modules and components from the donar car and finding a way to put it in the final product, and very well might have serious issues such as security system conflicts, chasis computers etc. It will likely be a very very large and difficult project

aftermarket standalone system's are not allowed. None of them are OBD2 compliant or meet EPA regulations