bump up to a 3.54 gear out back, im assuming you have the more common 4.10s in that bad boy. unless your doing a lot of heavy hauling the 3.54 will do you very well and add to your mileage. you'll notice a slouch at the very low end, but it doesn't take long to get used to and the benefits outweigh negative side in my book. plus it will bump the highway cruise from 60-65 to 75-80, and thats always good in my book.