I'm looking at an older yamaha 4x4 ATV and think it's a BigBear 350 - The seller "thinks" it's around 92 model year, but isn't real sure - is there a way to check what year it is and if it is indeed a 350cc and not a smaller unit - the front plastics have been replaced at some point so there aren't any stickers on it to tell what model it is - can I be sure it's not another model?

I'm assuming if I can locate the VIN the dealer can tell me what year and model it is?