I do not run the Big Stuff 3, but they are great systems also. I have spoken to many happy Big Stuff owners. We have had great success with the FAST XFIs and have a top tuner that works closely with us which makes the decision difference here. We are putting together complete conversion set ups with manifold, rails, throttle body, electronics, etc. And ProChargers. We are firing up a ProCharged, Fast injected, 455 Pontiac in a couple hours. That Pontiac uses a Serpentine accessories drive, along with the ProCharger (I believe a first). We are also doing a big block Chevy with a F1, Serpentine set up and a FAST. These will be available in kit form very soon.
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