PabloCruise
SILVER Star
Just for a difference of opinion. I'm using the OEM fuel pressure regulator with an aftermarket pump. I believe it's an Aeromotive, but don't remember which flavor. You need 45psi out the pump. Mine is mounted on the rear crossmember using muffler clamps and rubber isolators.
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I believe I opted for the exact same pump and factory FPR.
IIRC, the pump is from an late 80's F-250?
When my return line was plugged, this pump was building >70 PSI in the rail!!!

Once I fixed return line the FPR kept it right around 36 PSI in the rail.

BTW, has anyone found a way to install a fuel pressure gauge on or around the rail?