My car has factory 3:31's. I also have a tune, CAI, longtubes, BBK throttle body, aluminum driveshaft and Ford Rcing Sport mufflers. The performance increase accompanied by these mods is well worth it. Adding 3:73 gears ( you just have to replace the gears and preferably the bearings, not the entire rear end as previously stated) would be the only thing I still want to do.
But then again, I might just throw on a Procharger, and be done with it.
Any or all of these standard modifications will make your V6 perform better. And the good part is, non of them affect the driveability characteristics of the car.
2011 GT. Grabber Blue. Procharged. 3:73 manual.Billit LCA's. Corsa Extremes. GT 500 wheels. Racemaster DR's. T-56 Tremec. Dynotech DS . Centerforce DF. American Racing headers/high flow cats 560 rwhp.Donny Walsh tuned
2012 Pony Package. Race Red.3:31 automatic.BBK longtubes and catted X.FRPP Sport axlebacks. BBK throttle body. Dynotech DS. Brembo wheels and tires. Strut tower brace. Airraid CAI. Bama tuned.