1) You can take a spring and cap from any normal Pontiac Oil Pump and swap the parts with the 80 psi spring cup and spring. I used to buy the 80 psi spring cup and spring from Melling for about $4.00 and convert the stock 60 psi pumps to 80 psi pumps.
So going the other way, if you have your old pump laying around should work unless the pump had 150,000 miles on it.
2) Pure street vehicle I would run the 60 psi pump parts too.
3) The hardened Driveshaft is a good idea if you run the 80 psi pump but I have never seen a stock 60 psi driveshaft fail in normal usage. Not Racing stuff with thick oil.
Maybe if you got a chunk of material inside the gears of the pump from a crappy oil pick-up design.
4) I would run the later oil pan with the baffle welded in the pan. Helps on right hand turns off freeway ramps.
Tom V.
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"Engineers do stuff for reasons" Tom Vaught
Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward.
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