I'm restoring one now , 01 model...a po says its a 155cc..but I think he did the work/overbore setup..I will try to get more details from him soon..he left the east coast to live on the lefty side of USA, so its a bit more difficult to contact him..but for social media.. I will post up pics too. TMs rock!, from what I know/have heard..I'm in the mind to buy a new one by spring time '17