Also on the Mini sprint/Upright Mini sprint/Lightning sprint cars. Primarily 1000cc in the USA. The chassis is very similar size and wheel base to a midget chassis. Some people including me convert midget chassis over to run a bike engine and chain drive. Personally I have converted and run a 1999 Stealth Midget into a lightning sprint. Another one that gets converted a lot is the Triple X Midget chassis, but I have seen people convert a Spike, Bullet, DRC and a Ripper.