In 1992 I bought the Holley Pro4 injection for my 340 and a Mopar M1 manifold, when my Signet was close to running condition, the Holley was removed and a carburetor installed in its place because no one at the time knew WTF it was about. I still have this unit, brand new in the box, computer, wiring, booklet and all.
I just wanted to share that with you and say that I would rather use an injection from the newer Magnum on a small block then to play a friggin game with an aftermarket company. I know that there are companies who make a harness and I'd rather do it that way then to play games with a company that pays for a profile in Hot Rod magazine just to sell a product.
I'm not sure if you'll understand or accept this but in the 70's when the W2 heads were coming about, Bob Mullins and others built spacers for Chevy manifolds which were simply modified to fit onto the W2 heads because Chrysler hadn't made a manifold as of yet. These spacers though rare can be made and with that said, imagine the possibilities of using the newer F.I. systems which are proven or just using the Magnum F.I. system with the stock computer with a chip and all you'll need is a custom wire harness.
