Scooting, I just mentioned the FiTech because I figured it would be cheaper than the holley stuff. I've had 2 other friends ditch their holley efi as it would never learn properly and always was off the car or truck being sent in for repairs or reprogramming. One of these guys went to a Fitech, the other went to a Duramax. I realize that you're a hot rodder and you have all this (new) old small block stuff. But those LS engines can be ran with the stock PCM and be tuned to do what you're wanting for a lot less money. So I guess to me IMO it just comes down to what injection system you want to go with and how much more money you want to spend on the build. From the looking I've done, the FAST is about $500 more than a Fitech unit with the add on fuel system from Fitech. Which is better? I'm not sure both have great reviews.

With the holley, do you have to piece a system together for the multi port? I see what you're saying about wanting to stay with an old engine but either way you're adding technology to it and changing the looks. The fast and Fitech can still look like an old carb'd engine. The Fitech have supercharger units too.

Hopefully someone can give you better help. I'm not much help. Haha