Just got started on this. Building a c/p race mower. The power plant is going to be a the biggest badest opposed twin u can get your hands on. A 46ci 20 hp pressure lubed. The 46cid was the bigest opposed briggs made till they were bannd cuz of emissions and then the vangard ohv vtwin came into place. The trans is going to be a peerless 700 to a 1 inch live axle. The flange mounts are NOT welded in yet because its going to be lower and i still have adust it. I just started on this build so that is all i have done at the moment. By the time its done there should be over a grand of work i did into it. And thats cheap. Theres a mower that i race with that the guy put 10 grand into. Thats a b/p mower, with E.C distributing parts and g team racing.