Tires
I bought the Truck with some slightly oversized (and worn) Pro-Comp All Terrains. They simply weren't aggressive enough, and I knew I wanted more clearance. I looked around and decided (after copious measuring) on these:
Here is a comparison of the treads (not actually my tires, but the one on the left is an Xterrain and the one of the right is an ALL terrain):
Here is what The 4wheelparts.com website has to say about these tires (I have 315/75 R16's on it)... They are also one of the few tires in that size range that you can get in D load rating, which I felt was important for a truck as heavy as mine.
Pro Comp Xterrain's