Ah ha ha ha ha Edy, I have one of those too, Tour 10, weights a ton and is pure Carbolite sex. Nothing like the titanium beast above. Like most Pugs of their era (Early 80's) they are use dirty French threaded bottom brackets so any replacement is going to be hard. I'm running a threadless bottom bracket and Sugino cranks which seems to be working out fine. You will struggle to get a decent chainline using the old big ring and with an 18t rear you will be struggling with the gear inches but good luck.
Ah ha ha ha ha Edy, I have one of those too, Tour 10, weights a ton and is pure Carbolite sex. Nothing like the titanium beast above. Like most Pugs of their era (Early 80's) they are use dirty French threaded bottom brackets so any replacement is going to be hard. I'm running a threadless bottom bracket and Sugino cranks which seems to be working out fine. You will struggle to get a decent chainline using the old big ring and with an 18t rear you will be struggling with the gear inches but good luck.