What are the Diffrence between 3.73's and the 4.10's? shes a every day driver.. but i race her as well....and im hearing alot about PI heads and such.. what are they exactly and what kind of gain can i see from that?

 

You already have a PI (Performance Improved) motor, so you don't have to worry about that. As for the gears, the gear choice really depends on what you are going to do with the car. If you are going to be getting a power adder in the very near future, hold off on the gears. See how the stock ones work for you and adjust from there. Off road pipe would sound great and give you some gains.

If you are seriously considering motor work and some sort of F/I, I would save and do those big ticket items first. The smaller stuff can come later.

 

ok anything big besides the F/I i should think about before blowing her