is your car stock or do you have any mods?

 

Congrats on the purchase. Good luck with the install.

 

I have a few mods. JBA CAI, BBK LT headers, BBK x pipe, SLP axelback, Ford racing 4:10 gears, and the diablo tuner

 

^^ them M90 is gonna make your GT fast as hell with those mods

 

I would not use the roush tune because of your long tube headers! Roush tune is a little on the rich side,but with the long tube headers will lean it out! I would get a custom tune! VMP is what i have! also JDM would be another one!