[PeteKz]

First question is always, "How much budget do you have?" then, "are you doing this yourself, or paying a shop to rebuild the engine?" And then, "street car or race?"

I'm sure I'll get some counterarguments, here's my take for a STREET car:

The 3.0 and 3.2 aluminum cases are very robust. Unless you see or measure something out of spec, do not send it off for machining. Check the rod bearings for clearance. If those are within spec, LEAVE THEM ALONE. Only replace the rod bolts.

If the rod bearings are within spec, then the main bearings almost certainly are too. Do a test assembly with Plastigage and see if they are the same or there are significant variations among the bearing clearances. If the mains are good, leave them alone too. Replace the intermediate shaft bearing shells and check the other internal parts and especially the oil pump. If any questions about the oil pump, replace it or get it reconditioned. Those do tend to accumulate wear. Then put it back together with the ORIGINAL bearings. You will save yourself a boatload of time and trouble, not to mention money. Use new oil seals. Check the intermediate4 shaft gear and can drive sprocket. If within spec, reuse them.

To reassemble the case, use the recommended sealants in another thread on this forum.

Pistons cylinders. Measure and renew only as necessary, unless you plan to increase displacement to 3.4, which will require a new set of P/C's and about $5000.

Heads: replace the valve guides and recondition the valves and seats. Reuse the springs unless out of height spec, and retainers unless worn or out of spec. Send these to a shop that specializes in 911 heads.

Cam and housing: Are you going to use a different cam? Different intake and fuel injection system? Lots of discussion about various cams and pro's and con's on this Forum. Peruse those. Check the cam bearings for wear, but unless they got contamination in them, they should be good.

Rockers and rocker shafts: These probably are showing wear, so recondition or buy new, especially if you are installing a different cam. Use the RSR O-rings!

Cam chains and sprockets: Inspect carefully, but reuse if they are not worn.

Buy your gaskets and seal kits from Wrightwood Racing.

That's not the detailed response, but should get you thinking about how to proceed, and provoke counter replies! .