I am 16 years old and just bought my first car, a '69 Firebird. I would like to know how to tell if the car is numbers matching, the guy I bought the car from said that he thought it was but he isn't sure. What is a better 4-barrel carb, Holley or Edlebrock(mine currently has the original 2-barrel)? What kind of exhaust system should i put on the car, it has single exhaust right now, is Flowmaster the way to go?