fuel regulator do i need one

[NoHachi]

Depends on the type of fuel pump and the fuel pressure that is being produced. Supposedly Webers have a fuel-pressure sweetspot that they like running on (very low if I remember correctly) but a google search will show up results without problems.

If the fuel pressure is low enough, then you can just hook the carb up. If its to high, you either need to switch pumps (easy) or run a FPR and a fuel return line (irritating work). Just hook up a fuel pressure meter to the rail and measure..always handy to have around when diagnosing problems with the car anyway.