I have 1st semi auto 50cc ,2nd says 50cc but is full manual clutch not sure if its really a 50 or 70cc as I was told some say 50cc but are 70 but im not sure in that I always thought if it was what it is it say 50,70 on the bore and 3rd is a 70cc semi auto just looking for lill mods I can do but im def upgrading the front and rear suspention then its just new plastics and graphics for them all