Hello all, just got home with a 1971 250. noticed smoke and tapping., got a good deal so took it anyway. as i look into everything i am pretty sure it is a head gasket. Plan on doing a quick rebuild with new gasket, studs, valve lap, valve stems. done this with many of cars, but first mercedes. anything to be cautious of? any "must do's" while in the process?
car has great oil pressure, no noticeable oil consumption.

Thank you,
Donny