im looking at getting an old stumpjumper that needs some work and reviving it. (not sure the year, but i would guess pre-'98 as the specialized name is on the top tube rather than on the down tube as it seems they switched to in '98.) i can get it real cheap, but it needs a few semi-major repairs. one of the things it needs is a new bottom bracket, which is something ive never worked on before. it also needs a rear derailleur and maybe a couple other minor things.

would these parts be cheaply and easily available to fit such an old bike? ive been thinking about getting a cheap bike for messing around on learning to bunny hop, etc, but if its going to take $50+ to get it back in shape, thats more than i wanted to spend. although theres a good chance id tire of it and want to sell it at some point. would it have a good resale value once reconditioned?

i picked up (free) an old roadmaster mtb the other day for parts. how can i determine if the bottom bracket from that bike would fit the stumpjumper? (assuming its still good, pedals were kinda wobbly when i checked it earlier, so unless it just needs to be tightened, that ones no good anyway. but if it were, do i just need to match the sizing?

thanks.