I had seen this too. The radial conversion set is new around 1100$, and fits the road and track forks, when used with the oem ohlins, 15 mm are added to the lenght of the forks.
I did mail the guy what he wanted for forks& radial conversion. I don't know how high the reserv is set.
There is a complete set, where it is mounted, on ebay also, for big money.
And another set for gsxr, only with 108mm caliper mounting, and for that no cheap brembo's. Or you have to go with tokiko calipers,not.