All of these bodies are sized to fit the Womp inline chassis.  These bodies also fit the Champion Thumper, Legends, and Modified chassis.  For other applications, you would need a 2.5" wide chassis and a 3" to 3.25" wheelbase.
MonkeyWerx is a new slot car body company using the same type of tough PVC used by Boss Bodies.  MonkeyWerx will have several models of older NASCAR style bodies, as well as some other circle track offerings.  These can be painted with any lacquer, enamel or acrylic paint.  Do NOT use Lexan paint.
ToyTech Racing ToyTech bodies are done in more resilient PETG than most bodies.  These are very nicely done bodies in a variety of dirt and asphalt style.  Super modifieds, modifieds, Legends, and stock cars.