Did a little research on these Tecumseh 5.5 motors for sale from ebay via Puerto Rico. TECUMSEH 5.5HP Racing Engine SBH-9999 Extra Parts Go Kart Mini Bike Motor | eBay A few have been sold as illustrated on the ebay feedback system. Asked for additional photos. Seller opened one of the crates and took pictures. Noticed and inquired concerning the advertised billet rod and stainless valves. They are not installed but come with the motor. Motor is supposedly new and running as is. Looks like the motor has been painted/repainted ? Valve covers are silver. Not willing to take a chance on this. although ebay protection guarantee will take some sort of action if things go wrong.