If it is a 1/2 ton, which a 32 would be, there's only 3 choices that were used, the std. 3.90, and the optional 4.11 and 3.38. Most likely, though, it will have the 3.90. Going with the T 5 swap will make highway driving much better, and also a taller tire will help, too. I'm running a 3 speed w/Borg Warner overdrive and a 30" tire, and run comfortably at highway speeds at about 2300 rpm.
