Oil pressure is inversely proportional to bearing clearance- - - - -the wider the clearance, the lower the pressure will be. A new set of rod bearings will probably raise the pressure more than replacing the pump will do.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!