I bought a used older Bad Boy wheelset (early 2000's?), with 4-bolt rotors on Mavic XP21 rims.

I want to use it on Rocky Mountain hybrid (disc) frame. I have some older BB7 disc brakes for mountain applications. Can I use them? (haven't tried to fit them on). I notice there are some road BB7 brakes, how do they differ from mountain?

I also have a mountain BB5 brake (mountain), could I use them as well?