Most if not all electric fuel pumps come with and require a regulator, even so that doesn't mean that some idiot didn't leave it out of the system! If you don't have one you should, most people mount them in the engine bay in a tidy spot away from heat or physical harm (like any part of the fuel system should be). There is a chance that it's installed back by the fuel tank near the fuel pump on your car but this isn't really common or desirable. If you don't run a regulator you can have major fuel pressure problems in the carb; seals, needle&seat, etc.
Good luck!
