Someone asked me this question off of this thread and I thought it would be good information for everyone.
Will the G/S brake caliper bolt right on to GS forks, and if yes, will they line up with the G/S rotor? Or will I have to fab a caliper adapter bracket?
We are pushing my memory here. I did this conversion about 15 years ago. We used the GS disc, re-drilled it for the 5 bolt pattern and I think I made a spacer to bring it out further. In drilling the rotor one of the existing holes is used and 4 new ones are drilled.
The one question I did not answer was regarding the caliper. The GS caliper was used along with the GS rotor.