Do you know roughly what HP you are running? With 30lbers I am saying that fuel pressure will probably have to be set pretty low...maybe 38 or 39 pounds...There is a fuel pressure calculator on this web page that should give you a base...and you can work from there. 
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Midnight Blue 89 GT... 306... ported and polished aluminum GT40's, MAC Long tubes, MAC power pipe, Flowmaster 2 1/2 cat back, GT40 intake with ported upper and lower, B-Cam, 24lb injectors, 77mm Mass Air, 65mm TB. World Class T5, 3.73's, Centerforce Dual Friction, FRP aluminum radiator, Victor Jr water pump, Pro 5.0 shifter, Crane adjustable FPR, 255lph fuel pump
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