We have been running a mono shock swing arm for almost 8 years now. PSP racecars from Oberlin, OH has always done our chassis work and has been using this concept for over 12 years. Out current car which is for sale has a dual suspension on it. It will go down any track in this country and I will gaurantee that you will think each track is perfectly smooth. We run Norwalk on Saturdays and then a little outlaw track on Sundays. No problems and repeats anywhere. The swingarm design is the simplest of all suspensions to adjusts. Personally, I would never go back to a traditional 4-ling that runs wishbone and antiroll.