Hello again vwvortexers. It's been a while...
Checked out the head I'm using with a straight edge and feeler gauge... book says maximum warpage should not exceed .3mm ... warpage slightly exceeds .3mm.
I suppose it's time to talk to a machinist about getting it milled and surfaced.
The engine block itself is perfect. Presumably the newer head is in better shape a but once I got the car running earlier this summer, I sold the intake manifold that fits on that one. Plus there are other modifications that would need to be done; It might not fit right in the engine bay, I would need a new cold air intake, I'd have to figure out the wiring and all that... the reason I'm using the old head in the first place. Right now, machining it seems like the way to go.
Would I also have to replace and re-bore and re-seat all the valves and a bunch of other pain in the arse sorta-expensive stuff in which case... IT NEVER ENDS!! JUST LET ME DRIVE THE DAMN THING!!!