These are in the works now and hope to see them early/mid November.
They are 84mm mount and 16mm offset and will be clear anodized.
Would like to get deposits from people who want these so I have a partial amount to pay the machine shop when they are done.
They will be $275 shipped so I'd like to get $150 deposits to hold one.
This is just for the bracket. You would be on your own sourcing a caliper and custom brake line. Below is the original thread that references a few caliper options, mainly the Brembo P32 and Beringer rear caliper. The main details you want focus on are you will need a caliper with a 84mm mouthing ctr-ctr and 16mm offset. I would recommend getting the caliper before the brake line.
Once you have the bracket and caliper mocked up on the bike, you can then measure with a piece of wire or solder the length of brake line you'll need.
Speigler does an awesome job providing you with exactly the right line for the application.