McMark

I'm restoring a 76 280z and I have a low fuel pressure issue. I'm reading around 32 psi at idle. I have a new fuel filter, new fuel pressure regulator, new fuel damper, and I've visually inspected the hardlines for kinks and didn't find any. I've fed fuel from a gas can to test if the tank had rust, but that didn't help either. My last thought is that maybe the fuel pump has a problem. But I thought they were pretty reliable. The car only has about 75,000 miles on it owned since 78. Any other ideas for things I should check into or look at? Or maybe I'm doing something wrong. The fuel pressure guage is hooked up in place of the cold start injector. THANKS!!