Henry R,
The cars got 1/2" hard line to a regulator on the firewall. But the pump already has short lengths of rubber fuel line on both sides to isolate it from the lines. I even thought about just "hanging" the pump loose temporarily,just to see if that helps.... BTW the pump does have a Fram canister filter hard plumbed to the inlet side. But the filter has a pc of rubber fuel line seperating it from the tank line.

Don, my pump has rubber from an exhaust hanger under it right now. I think part of the problem stems from the bolts holding it in place..

Right now I could probably get by with a smaller pump...this motors a pussy cat, but next year Im planning on a couple of things , starting with a set of aluminum,(maybe Vortex heads)? I want to get the car back into low 13/high 12s. soooo...... not sure where to go from here?