I have a 98 mustang that was a V6 and now it has a 32V Mark VIII engine in it .My ? is What fuel pump would be the best to put in it? I was going to go with a focus SVT but it is for a returnless system Right? The 98 V6 car has a fuel return system with regulator.what is the Diff. between returnless pumps and non returnless pumps. The reason I am doing this is because I drop fuel Pres. at high RPM 20 PSI.