The radial mount is easy but machinests on vacation is harder. We already worked out 95% of the engineering when I designed these mounts (below) for my Ohlins, same principle, only different. The Brembo radial mount are relatively inexpensive, are re-buildable (OEM Brembo are no as of yet) and the new style radial brakes work much better due to the design. You will be able to use any size rotor with very inexpensive spacers purchased from me. We are taking from 11 1/2", 300 mm, 320 mm, and to 13". Think about it, the advantages allow you to upgrade to a larger rotor and keep the same set up. This will work with all HD' w/conventional (side/lug/OEM mounting) forks as well as the V-Rod and the Fat Bob. No modification will be needed, direct bolt-on.
A springer is not considered as well as the 1999 and earlier fork sliders as you can upgrade to a later, and cheap/plentiful slider(s) using the same a 2000 slider on the old fork tubes & internals.
We are busy designing other projects and trying to create them. This is what you can use and what it looks like. Use any 100mm mounting brembo will work which range from $250/ea to as much as $2,200 (what Rossi uses on his race bike). When it will be done is up in the air until I get them done.