How difficult or expensive would it be to fit the USD forks from a klx650 to a klr650? One site said they bolt right on, and another indicates it requires an adapter of some kind. Which is right and how much better would the suspension be with this mod? It seems like it would be much more solid than factory.(no need for a fork brace etc.)

I believe Tammy has done it from over at Big Dave's KLR forum, I'd get her email address for you but I can't get to his site for some reason.

ERRRRR WRONG!

You mean Glenns KLR forum!