Time to refresh and upgrade the M20. Looking for feedback on both.

[digger]

Add valve guides and seats recut/ground probably going to be needed. Head lightly skimmed.

[e30davie]

Any head i pull off goes to the machine shop for testing (vacuum, pressure and cracks). Generally results in a valve or two needing to be replaced, valve grinds and also valve stem seals. Comes back uber clean due to the acid bath. Cheap insurance and worth it even on a quick refresh i think.

[r-mm]

Hello all

Long time DIYer here with a nice '89 325i 117k mi that is leaking a decent amount of oil from headgasket and possibly also rear main. I like the car a lot, use it as my daily driver. I'm looking to give it the attention it deserves and a few presents to 'wake it up' without sacrificing any DDability while I'm in there. I've built a few motors (911 3.2, Alfa twin-cam) in the past and hope this one won't be too challenging, but it is my dd so I'm trying to organize for a nice quick rebuild. The menu, for your feedback:

Maintenance:
Headgasket, Goetze
Rear main seal, Corteco
Front crank seal, Corteco
Valve seals (maybe)
Head bolts, BMW
Waterpump, Geba
Timing belt + tensioner, Conti, CRP
Cam seal, Corteco
Intake Gasket, Elring
Exhaust gaskets, Elring
Exhaust Nuts
Clutch Kit, Sachs
Pilot Bearing, BMW
Clutch Slave, FTE
Clutch Line, FTE
Oil pan gasket, BMW
Engine Mounts, Corteco
Lotsa other little gaskets I'm forgetting...

Fun:
Light Flywheel, RHD
Camshaft 272, Ireland
Rockers, HD from Ireland
Springs inner, BMW
Springs outer, BMW
Headers - TBD, maybe not at all
Chip - SSSquid to suit above and 87 octane. Yes, I know but I love that this awesome car runs on 87.