Cole Calkins rode one in 2000 set up how your are describing, You have to have the KX tripple clamp forks front wheel and brakes....im not sure if you have to have the brakes but he did. other then that you have to have a spacer machined. If you want i can get the dimesnions on tha spacer. Cole sold the bike to a good friend that owens a machine shop. So either him or Cole well know, i know both of them so its no problem to get the dimensions. other then that i think you have to press the kdx steer tube out and into the kx or something like that. i guess its not too hard.