[PeteKz]

Oil pump: I don't know if anyone rebuilds them. I would think if anyone does, Ollie's would. When I did my last rebuild, I used a Turbo pump with a cast iron housing. I rebuilt my engine 3 years ago because the oil pump scavenge side was not keeping up with the pressure side, so the case was gradually filling with oil, until the crank was constantly running in the oil in the crankcase, and was getting intermittent oil starvation due to low oil in the tank. I discussed this with Alan Caldwell, both because he was the PCA national tech advisor, and because he was relatively local to me (in Seattle, until his passing last year). He said he had seen this on SCs under certain conditions. Rather than trying to rebuild mine, or buying a new one, I got a deal I couldn't refuse on the Turbo pump, which pumps more oil, and has a proportionately larger scavenge pump section. So that's what I used.

With respect to mikedsilva for his expertise, I understand the urge to put in new bearings and rings. If you just want to, hey, it's your engine, do what makes you comfortable. But if you want to conserve money for other purposes (like suspension and tires!), then there is no reason to replace parts that measure within the specs. That's why Porsche (and every other manufacturer) provides those specs. Journal bearing shells do not wear out in normal operation. They wear because dirt got in the supply oil system, or lack of oil. The crank main journals and crankpins rotate on a film of oil that prevents metal-to-metal contact. Otherwise, they could not last several hundred thousand miles in the first place.

The Plastigage check will help you decide.