On my hybrid Gary Fisher Utopia 2001, I've noticed that my front fork has mounts for discbrakes but I di didn't find any similar holes on the rear seat stay. Although there were some threaded holes there. Does this mean I can probably only mount a disc brake on my front wheel? Can I mount a disc on my current hubs or do I need to buy new hubs and rebuild my wheels? I have Rolf Vector Hybrid wheels. I've been trying to google up this info but it seems that nobody else needed to ask these questions Thanks for any replys. -- Perre You have to be smarter than a robot to reply.