Fuel pump pressure should not be more than 2-2.5 psi. A pressure regulator would be helpful. An electric pump as a pusher near the tank works better as a puller near the engine. I dove my 37 Airflow coast to coast across the desert at over 100 degrees without a problem. Problems worse with Ethanol fuel. You may find as I did in some circumstances in hot weather and higher altitude a mechanical pump just will not pull fuel without it vaporizing and causing problems. I prefer original when possible but their fuel not like ours today.