EFI Magnum engine/trans in old A-body (65 Barracuda).

no one has mentioned yet the wiring/electrical side of an EFI swap into an older car. you will need the complete engine/trans electrical wiring and the ECM for it work. there are many many sensors that need to be just right for everything to work together. not trying to scare you but when looking at a bird's nest of wiring it can be intimidating. then you have to think how you are going to run everything, cause it probably wont fit right in the car. there's like a million wires that come out of the computers in the newer cars...its scary enough for me that I would lean more towards a carb'ed motor with a mileage cam and highway gears. just my $.02
-tim