I go to a lot of race tracks in the stlouis area, such as I55, Tri-City, Bellville,and SFCR. Could somebody please explain the difference in Sportsman cars at different tracks. What is the difference in a car that allied runs at Bellville and Pevely from one that runs at SFCR,or any other track. What is the difference between a Sportsman and a Streetstock? Is it just a couple of small things like tires?