I just got a 92 blaster for a winter project it has a seized engine? I have ordered a big bore kit from ebay was told that it's not a true big bore it has a 68 mm piston . Want to build this thing right and have it for a while . Any suggestions on what kind of things I should do to it and what might be the best carb and exhaust system to do this is my frist 2stroke so any advice would be appreciated thanks