If you haven't bought your heated grips yet have a look atthese:
http://www.hotgrips.com/ktm-motorcycles.html
They can cut them down from 121 mm to 115/6 (the grips on my 2000 adventure are 110 mm) but the hand guards can just be moved out a little.
I'm waiting for them to be shipped via a friend in the usa. I've looked at the Daytona, Oxford ones but they're too hard and too long.