Hey Rad, i've been contemplating this mod for a while now and have been following this thread with great attention.
I want to keep my OEM wheel and caliper as well, so I would be very interested in your caliper hanger and axle if possible, hopefully i'm not too late, let me know.
And to throw something else in the pot: any of you guys have ABS? That's another one of my issues that i'm still not sure how to tackle, that ABS sensor thingy and how to mount it to the YZ forks.
I'm thinking some kind of bracket clamped to the bottom of the leg or to the axle (I think that's what Touratech did).