Best Fuel Pump Advice for Newb...

The Holley has (had) the right spring as did the Carter 6902 ( NLA) so proper regulation is built in. Simpler, cheaper. Also less restriction unless using a fuel log and return side regulator. A stock pump should have been enough for the fuel consumption, but I can't guarentee that so didn't suggest it.

Anyway I'm with A/J. Spend the time on hunting down the issue. Check the sock, the rubber hoses, condition of the lines. If the filter is metal, cut it open to see if its clogging up. Pump can be tested like A/J posted, or if its an aftermarket pump, open it up to see if the diaphram or valves have failed.