I almost went that route at the advice of several people who've done that exact swap, then out of the blue a friend found a screaming deal on a lightning lower manifold for my 351 and parts just started appearing... a buddy gave me a MAF and injectors, I bought the few odd sensors needed and a harness from summit. I am into my Ford EFI swap for under a grand and very happy with it. I was however days away from ordering the AFI kit. I'd have been happy with either but I love my Ford setup so far.