Things are going a little slow on the front end conversion, been waiting on parts still. I did get a left 4 pot caliper ( 'bout $40 for the Brembo and yeah I'll be using the Harrison 6 pot, but just have to try it.) from a 1995 R1100GS ( I believe any R1100 or K1100 will work). As mentioned the mounting hole spacing is the same, but metal will need to be removed from the caliper tabs.
Here's a nice writeup- http://www.airheads.org/content/view/275/98/
Or my writeup (here)
Here the caliper is mounted to the right fork, no machining yet.
I've spoke w/ Woody's Wheel works and the wheel shipped out today.
The Harrison Caliper was shipped yesterday.
New brake rotor will probably ship today.
So hopefully all the parts will be here by next weekend!!
Took some measurements of the pad area for the Four pot Brembo (approx 8.12 sq in of pad material)
The harrison Mini Six has 15 sq in of pad material