58gmc 1/2ton truck GMC302 9:1 compression, Clifford Intake& Clifford Headers, Tom Lowes modified 4barrel Holley. What psi electric fuel pump do I need? I have one put puts out around 4psi but have read that 8psi is better? Thanks
Danny 1958 GMC stepside GMC 302 six cylinder 3 speed OD trans