Save yourself a lot of wasted time and trouble. Go to NHRA.com, buy the rule book and build your car to the specs in the book. That way you'll be legal at all NHRA sanctioned tracks and if you'r NHRA legal you will be legal at most any other track around. There are also several good books on building bracket cars. If you spend $50 on books now you can save $$$$$ later and have a car that can win on race day. Join NHRA and you will also get the monthly news magazine. It has a world of useful info on tracks, races, race part discounts and contingency awards. Plan Ahead.. by using selected parts from participating parts manufacturers and displaying their decals on your car you can earn as much and sometimes more money than the actual payout for a class win. Good Luck and most of all Have FUN!!