With the front end mounted, the rear wheel was next. This was an easy one.
Flip the disk on the KTM wheel, use the 650r brake caliper.
Bought a set of wheel spacers for the 650r to fill the gap left by using the spoked wheel vs the 17" stock.
Machined one of the spacers to achieve proper distance for brake caliper to disc.
Drilled and taped the stock caliper anti-rotation mount and insert a 10mm bolt. Caliper bracket slides on the bolt head.
Machined the spacer a bit to small so I ground a bit off the disk bolts.