I have a 990 tank adaptor plate not being used if anyone would like to give it a try. They have two 1/8 NPT threaded holes w/ 5/16 barbed fuel fittings installed. Looks like this one, but w/ an out and a return fitting. Might this pump work w/ a regulator? http://www.clarksap.com/products/1984-VOLKSWAGEN-RABBIT%2FGOLF-4--1588+1.6L+Dsl-Fuel+Pump.htm PM for details.