Ran 2 Holley blue pumps on my old '69 Dart 340 racecar. Had a rear-sump stock tank so mounted the pumps further back on narrowed frame (narrowed a bunch because I was running 14x32 slicks inside tubs with stock-height but 4" lengthened rear wheel wells. 1/2"-dia. fuel line then run forward along 2"x4" frame ties to fuel pressure regulator.