I just picked up a speedway scorpion. It looks good but its missing a lot of parts and needs a lot of work. The seat tank and engine are not original and its missing the original clutch, clutch guard, jackshaft , rear wheel spacers, throttle and brake cables one of the brake handles the throttle grip light bulb for the headlight, the tail light, the front brake caliper and the rear brake is missing the armature,. Someone cut a chunk out of the top frame between the seat and tank and replaced it with bar stock for god knows why. the left side front fork shock is stuck bad, I already tried once to free it by hand with penetrating oil and failed. and the right side is freed up but sluggish to respond. and the hardest part to replace would be the plastic sprocket mounting pace, it was cracked to bits and came apart when I loosened the bolts. I'm looking into replacement options. I think the engine is either an h50 h60 or h70 but the model numbers are from sears so they don't say which one. the original engine is an hs40 but I think ill keep the big engine I want the extra power. in order to keep it I'll have to center it better in the frame, its exceedingly right side heavy and partly covers the foot peg on that side. to fix this I think I'm going to mount the sprocket on the jackshaft that lines up with the clutch outside of the frame to allow the engine to be moved over further. I'll try to find a way to level the carb and buy a custom header. for the time being I'm keeping most of the bike the way it is and just focusing on getting it assembled and running and fully functional. I can fix the frame and have a better seat made and find an original tank later. I think I wont bother with the finding an original clutch or cover for it they wouldn't work with my currently planned setup. I cant wait to ride it!