I just purchased an old polaris 1991 350 4x4 from a buddy. Man I love these old machines. The oiler stopped working and fried the piston. He took the cylinder in to get redone and left it there four years ago. They don't have it anymore. I have a buddy with a 400 cc motor and was wondering if I could swap the cylinder and piston? He used it on the farm and has been in his garage for twelve years. It looks like new so I have to try and get it going.

Thanks a bunch