All the comments I've seen about it agree that it's taking away the DF-03's main feature of a centrally mounted battery which is part of what makes it handle so well. If you put the KM chassis conversion on a DF-03 it would basically turn it into a shaft drive version of a TRF501
I was thinking about it, but I'd have to re-wire all my batteries. Ooh, hold on, my TRF501 uses saddle pack batteries...
-Steve