Most just buy a Gregg evans Valve body (AKA FTVB) drop the old one and put the new one in (the whole valve body) I just baught the accumulator valve (aka Line mod Valve) the rest can be adjusted in the tune like gearmesh said.
Depending on how hard you hit the pedal and how much spinning you do, what I have is enough to make you swallow your dentures. Normal driving its almost unnoticeable, part throttle it has a nice crisp snap, WOT feels like someone smacking you in the back of your head.
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