So everybody wants to know about the elusive 600X. Another thread that mentioned a 650 hillclimber with a frame based on the geometry of the 450 got me thinking... Has anyone checked if the 650R motor fits in the CRF450 frame? I haven't looked into this much, and it may be way off. If it fit, it could be a sweet bike: XR engine reliability, CRF suspension and frame geometry. I didn't get any responses in the CRF fourm. Thoughts?