Doug, I have a Corsair T72 complete. See my advert on eKarting. Comes with (or not) Horstman DXL and a Burco, both 9 tooth. Couple of pistons too. Outboard 3rd bearing. Invader mount below. $550 the lot. Plus just discovered a Tecno of late 70's vintage I think with a DD Rotax on it. Not used for 25...