The best way is to feed each rail independently from a fuel log or “y” fitting, then come off the back of each rail to each side of the return style regulator and the return is typically a single line back to tank. This will give you the best and most consistent fuel pressure control.
AG.

Last edited by turbobitt; 12/11/21 07:46 PM.
1970 Challenger w/572 Hemi street car and my pride and joy. 1986 T-Type with 272 Stage 2 Buick V6 engine - True 8 second street car. Just updated the engine and put down 928 HP @ 35# boost to the ground on chasis dyno. 1976 Cee Bee Avenger Jet Boat - 460 Ford powered.