Have one but its buried and will be a few weeks until i can look for it if you dont find one in the meantime. Not sure what side it is, arent Hayes levers flip flop though? You need the caliper too?
Might be better posting this in the 98+ section though
You might be right and they might go either way, the originals on it weren't but I have bought one for the rear which I think is. If you could dig it out I would appreciate it.
Cheers
Steve