I need to replace the rear rotor on my 95 speed triple but I don't want to spend the over $200 it costs to buy the OEM rotor. It's difficult to find a third party dealer with the OEM part and I don't have much experience with know which aftermarket rotors will work with an old bike like mine. Anybody have any advice on how to find a rotor that will fit? Or a source for cheaper OEM parts?