ok it fits!
So we've got...
2010 harley dyna rim with dual rotor mount holes (using harley sealed bearings that came with rim)
2004 gsxr1000 forks and calipers (painted calipers black)
Hayabusa 320mm rotors, redrilled hole pattern with 11/32" bit
hubcentric rings made to center rotors
stainless cover plates to hide old holes. (The old holes exposed "chambers" in the hub. I didn't want water getting in there).
5/16" x 8 x 1" grade 8 bolts for rotors, torqued to HD spec of 16-24ft lb with loctite
10mm Caliper spacers and m10 x 1.25 x 70(?) caliper bolts, grade 8
.712 axle spacers, found them for sale as rear harley axle spacers. width might have been different by a couple thousandths. I can't remember the part number off hand.
Next up...
754 is turning my new stem
Going to weld new brackets on the cb fender to fit up