I was curious about this topic as well. Somewhere down the road I wanna do a Turbo EFI slant in a pickup, and would prefer a MPFI setup if at all possible. I came across this article DeBiase EFI for adapting the GM 3.8L MPI setup. I was curious about the Jeep 4L route, because I have a 92 Grand Cherokee with a 4L that is just sitting on my property and would like to find out if I can use that setup instead