First link is to some more best of in my Old Man's backyard dirt oval track. When our family gets together we typically take out our frustrations at speed on the dirt track. Its good fun at the following youtube link: Back 40 Dirt Track Racing
Again these karts are all Honda clone engine powered, single cylinder 196 cc. Essentially heavy box stock, no mufflers, basically the same thing that I race on the asphalt without the fiberglass body work.