Rear disk for 8.75 with SBP?

P.S. Is there any possible interest in anyone wanting to purchase only the modified backing plate? Pretty much exactly what is done in the MA article for the standard BBP axles
I ask because if so, I might invest more time into making actual jigs and fixtures so they can be reproduced accurately and cost effectively.

For those who aren't sure what I am referring to
Part 1
Part 2