Welcome to CHR newjade.... Can't help you a lot with the efi stuff, it's above my pay grade, I'm still a carb guy!!! I have put together a couple of cars with EFI, we have a guy here locally that does all the wiring harness mods, makes it a simple plug and play deal... I've also done them with a Painless harness, even easier!!!!! As for the V-6, friend of mine runs one in his roadster. He put a chip and stainless headers on it last spring, helped a bunch on the performance!!!!!!