Can radials fit Showas?

I have an 03 S4R. For some time now I have been trying to find out if a new set of fork bottoms can be fitted to my forks to take a set of radial calipers?
I know it is possible to buy a set of adapter plates for the fork bottoms but this is totally defeating the object. I also know that they can be purchased for Ohlins.
Does anybody know if there is such a thing as new radial mount fork bottoms for the Showas?
Any help appreciated.