If you want I can E-mail you some pictures of my kart and some dimensions. It is a propper chassi, but its been modified from a r/h shaft to a l/h shaft. A good engine would be a honde gx160. They have classes just for those engines. My e-mail is [email protected] I had an old briggs 3.5-4.5hp engine from the scrappy. I bust it like, but what the hell. 6000 revs. must be worth it. (only cost a tenner)