I am looking for an old Tecumseh H50 Motorsports engine (not the Powersport engine), that use to come on the go karts. In heavily used condition, for a rebuild project to face off against a Briggs Raptor. Have lots of Tecumseh/Briggs parts to trade, and or cash. I know where to buy them disassembled NOS, but I am specifically looking for one in need of a freshening up, or rebuild. Thanks.