clutch???

For a 216cc clone making 24hp,bike with rider 370lb.

picked up a 67 rupp continental(no jack shaft) what are my options for installing a 2 speed clutch,,if this is at all possible. Ole Pete

how can you tell if a clutch is going out?? noises, the way it feels, will you lose lots of power from a bad clutch?? what kind of problems will a bad clutch cause?? I am on my first mini and I just wonder if my clutch is good or not? I really have never felt brand new. if you know...