There are very few places my tractor is legal to pull. When i built it was for the mod stock class the basic rule was 800 cubic inch and no wider tire than 20.5 It was very expensive to keep them together and the class slowly started dying. we realy dont fit in any other class the rpm rules are around 3000 on them and we turn 6000 -6500, and the carb is aircraft another no no in alot of rules. I am not building another engine to run low rpm so we hit a few open brush pulls a year and make some exhibition pulls BILL