You cant racer .18's can you? From everything i know its only .12's. I like the .12 TZ alot from my on-road racing, which version do i need for my associated GT2? On the Associated site it says i need a Roatary carb and SG typr crankshaft, and that standard engine will fit if I buy [link=http://this]http://www.teamassociated.com/enlarge/2312.htm[/link] clutchnut