Built around a street car class our local track had. It was pretty fun, had 30-40 cars in it. Pump gas, mufflers, full functional interior, stock bodied including wheel wells (severely limited tire size compared to GM cars), wipers…etc. Many times I wanted to pull it apart and restore it and chassis. AMC 390, Indy -1 heads (BB dodge exhaust ports) and intake, 727, 5500 stall and a 9inch.