That's what I'm not sure of. The regulator has (1) inlet and (2) outlets, one of which I currently have the pressure gauge on.
which is why I was thinking that putting a "T" fitting in front of the inlet and running the return off of the "T", but i'm not sure it won't just blow all the fuel back into tank. A carb only needs around 5psi and wether the pump would push enough past the "T" to get 5psi is the question. If not then I will have to change to a return style regulator.