I've decided to take my k5 motor out and out it in my 87 trx250r frame. I cut the motor mounts out last night and out the motor in frame to take measurements. The pivot bolt is 15mm for both the trx and kx so that will work fine I'm going to Fab mounts for the rest of them and they will have rubber in them to cut down on motor vibes. My only concerns are the sprockets lining up, the kick starter won't clear the frame so I gotta fig that out, the clutch lever also will not clear its a good 3-4 inches inside the frame, and lastly the frame and mounts staying together with this motor. Anyone got any ideas on this build?