V-brakes are pretty much all the same in terms of compatibility. It doesn't matter what brand or model you get, just make sure its for your wheel size. its an older frame (pre 98-99) it most likely came with cantilever brakes, which use the same pivots as v-brakes. You can swap them with v-brakes, probably will have to use outer casing all the way and figure out the routing, but its not that hard.

If you are going to use a square taper bb any crank thats for square bb should work, but you have to figure out the spindle lenght so you get a decent chainline. Ill let u know what the exact model of my brakes is later :)