THE SERVICE SHOP IN THE SNOWMOBILE WORLD. I WANT TO KNOW IF THEY CAN HELP. BUT IM NOT SHURE HOW TO ASK THEM THE QUESTION. I HAVE SOME CAT 650CC CYLINDERS. THERE PORTED. I WANT TO BORE THEM OUT TO AN 800CC AND RESET THE PORTING. CAN THEY DO THIS JOB.AND ALSO DO PISTONS HAVE DIFFERENT SIZE PINS. WOULD A POLARIS PISTON FIT ON A CAT CONNECTING ROD?

ask them the same way you asked us. I doubt that they do port work of any kind.
caleb