I will answer your question with a question! Why? If you start running 9's you are going to spend big bucks that you don't have to spend running 10's! Examples: Firesuit, engine diaper, parachute, licensing and medical exam just to name a few! My 1971 RS Camaro is certified but I have no intentions of running it in the 9's with a small block. It has ran 10.03 at 133 and that is just fine! Maybe you don't race were the temperature gets up to 110 degrees on race nights but when it does racing is not fun! :?: :roll: 8)