Hey I will chime in here too...... we put the FAST ez efi on a 401 nailhead this summer, and it is AWESOME. We also just finished a Holley HP setup on a vette, and it is AMAZING. Both have their merits.... the Holley system is more advanced, and has way more potential, but it still has to match the application. For a fairly stock nailhead, the FAST is perfect and works so amazing. Our customer can't believe how well it works for a cruiser (by the way he owns both the fast and holley jobs) and how well the nailhead runs. It really is like a new car.
My opinion though is forget the FAST plumbing kit option, their pump sucks (sorry FAST) and go with an aermotive in tank on your factory sending unit. They are affordable and work way better. If you have to do a frame mounted pump, I just used a holley HP and it is a great option. Quietand no cavitation/air lock like the fast pump.
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