It seems full bodied karts are very regional and more to the south. I race here in Canada mainly but venture to Washington state to several sprint tracks and have never seen a full bodied kart there. Up here in Canada no one runs the full body that i am aware of. Everyone uses an old or new CIK kart. Birel CRG M.S and K&K build 4stroke karts all based on CIK body work. Three quarters of these Karts at a regular club race are ex two stroke CIK karts