you can use an xr200 or xr200r motor. or like the ld racers you could throw in a cr125 motor i was thinking about that but they are to much. isnt there 200x motors on ebay?? o and the 86 motor wont bolt in. you could make some mods and just use that motor.
1974 atc 90 project underway cuzzztom
1985 atc 110 for sale
84 200s all original got off the first and only owner
new carb
maybe putting my 200x cam in it but not sure
old trike
1985 200x
12.1 piston
oil cooler kit
white bors cam
super trapp exhaust
uni clamp on air filter
350x front end