For a stock rebuild, not too many. I'm not looking for anything silly, just the stock set up.
For performance, there's an insane amount of variety. This car has the same long block as the STI (de-tuned), and those guys go crazy.
Some items- crankshaft, rods, flywheel- OE only, or crazy forged, light weight, etc.
But, bearings, gaskets, and such, there's several choices, and I'm still working out how cheap I can get away with and still work right for a long time.
Really though, just being a tight ass. For what I got the car for, I could practically just drop a new OE long block in and be OK, but what fun is that?