Von I know some say they are too noisey but I have always run Holley pumps since the 70's. The one I run now is the black one with a reg set at 6 psi and it supplies my 850 fine with 3/8 line. Myself when you grew up wanting to hear that fuel pump when you turn the key on as that way I knew it was working so a little fuel pump noise does not bother me at all in my hotrod running 3" exh with Ultra-Flow mufflers. And I have never been let down on the road by a Holley pump but I did have one go bad from sitting a few years as it locked up. But thats all I use is just the Holley electric pump and its cost was not that bad. Ron