I have a street/strip 440 with 175 hp shot of nitrous and I'm having trouble finding a reliable, quiet, and performance electric fuel pump. On two different occasions I have used Mallory Comp 140's, and also tried two different Carter 4106's. I have a return system in place and the pump is mounted externally. I would like real life experiences with pumps approaching at least 650 engine horsepower please. Again, this is a street car with mufflers and the engine is making over 500 hp without the 175 hp shot of nitrous.