ALL PUT TOGETHER. Bearings pressed in, and adapter bolted on with loctite. (I goofed and pressed the spacer in the first time without putting the rotor on first. The bolts are countersunk behind the spacer so they had to go in and tightened down first.) I also made a custom 12mm ID axle spacer for the inside.
The caliper had a natural mounting position right in that nook of the swingarm and old shock mount. The axle is off of a.... Well I really have no clue but it fits and has a cool "t" handle on one end and an allen key spot.