Thanks for all the responses everyone - the 73 Clymer repair book only covers so much 😆
No idea how many miles are on the car let alone the clutch- I only drove it home the day I bought it in 2013, and up and down the street a few times sorting out the carbs, etc.
I considered reusing the clutch, but ultimately just don't want to take all this stuff off again to get to it. Always the dilemma when you pull a transmission.
Already fighting the urge to have Ireland lighten the flywheel - had a single mass on my 85 535i after converting from automatic to manual and it was so much fun!