i rebuilt one of these a couple months ago. it wasn't too bad to work on. took apart the ohv head and bead blasted it, cleaned up the valves, regapped everything then powder coated the top end. threw a jap carb on it. it ran well so i delivered it back to gymme and he rode it up and down the alley.then put it back where it came from,, in the back of the moped pile. i initiated fixing it for him and drug it home.
i went through everything and can honestly say,,mabe $100 tops.