I am looking for better performance in my '05 FX4 Supercrew. So far, it's supercharged with headers and soon, electric fans. It has 3.73 limited slip right now. I am wondering if it would be worth it to upgrade to 4.10s. Has anyone done this? I am planning on keeping my stock tires and wheels which are 275/65r18. Any help is appreciated!!

 

yes and a stall about 2700 or so