We run a different classing system in Ottawa that is moocho simpler.
A,B,C,D
That is all, my car starts as an A Class car which means I can mod it unlimitedly for free basically and still be in A class. But it also means I compete with Vipers and Z06's and 911's etc etc if they ever show up.
In regionals and nationals (which I may do this year), I would be in BSP which is B Stree prepared, Springs are 3 points right away and you are allowed 5 points in SP before you have to go into SS.
It gets very complicated, intake is free, cat-back exhaust is free, many other things are points, sway bar is 1 point, coils are 3 points that leaves me with 1 to play with which would be my passenger seat taken out. R compounds on stock wheels are free in SP and SS classes but in Stock they are worth 1 point I believe.