My turbo neon is using an external Aeromotive regulator... and of course, has a return line, but it is not exactly a "pure" spoolboy mod... im also using an external pump what I did is that I eliminated the fuel tank
evaporator (the one that goes at the lower part of the right fender, under the bumper) and used the evaporator line as a return line... The regulator works good, and everything ...