I spent $600 on Sun rim kits and then I score a deal on RC51 parts.
At least I can still use the new tires I got.
I always loved the red/gold combo

VTR axle mod:

VTR axle top, CR bottom:

17" wheel, 12" rotor, 6 piston caliper:

1/2 hour to machine the axle and a few minutes to wack off some spacers, and it's almost mounted. It'll look better cleaned up, powder coated and with a tire.
Though I'm not quite sure what to think of the caliper.
Next challenge is to fit the rear wheel.