i dont know if its a stock jug. the people i bought it from said it had a 240 kit installed and other stuff but they didnt know what. as far as the carb, unless they changed the top of the carb since 88 then its not stock. the top of the carb (needle/top where the cable goes) doesnt fit my spare carb that i have that i know is stock. its bigger than my stock carb so i dont know. but i ordered new v force reeds and 12 tooth sprocket and replaced all my gaskets and changed my oil. and i bought a 320 main jet