so did my due diligence on the clutch: looks like everything is in an acceptable range. so its all going back in:
diaphragm plate looks clean. friction plate needs to be roughed up a bit but im just gonna put it all back in as is. which is a good thing because its like $600 in parts to replace it all.
these numbers look alright?
backing plate: .303"
friction plate: .236"
and i got a 79 transmission that seems smooth and fine. I might just stick it in because I want to get riding. meanwhile Ill see how much it is to fix the old one.