ok. here are some pics.. the first is a kart i have for sale now. i was going to put the cr500 engine on it, but i ended up getting a dino kart with front brakes.
the series of build pics are of my girlfriends shifter kart. it was the same as above (made for a 4 stroke briggs) that i made the linkages, and mounts to make into a shifter. the engine is just a 125 5spd pit bike motor with about 12hp. hers needs to be blown back apart, mounts shaved, and cleaned up, stripped and painted still. it does run, and screws though with only 10-12hp.
i dont have any pics of the cr-kart yet. as its not done, and i need to get the wrx ready for winter. this kart has around 70hp.