Well.... There are about 110 rules here and i'am having a hard time finding one that doesn't have the word stock in it somewhere. I really like number 11 ... Cars must have wipers, heater, and a radio in working condition. Dash must be stock. It looks like they are intending to take a completly stock car, remove the glass, interior (except for the dash) add some roll bars (inside car only, no bars may extend thur the front or rear firewall) a racing seat, window net, fuel cell and go racing. All parts must be oem, stock for make and model. Any 1980 or newer car weighing 2200 lbs with a four cyl non turbo engine may compete.Engines must pull a minmum of 20 vacume at an idle speed of 800 rpm. I suppose anything the tech man can't catch is ok but most of the time your competors will give him a heads-up if you have anything too far out of line.