* T-case mounts
* Every kind of fluid you can think of
* Chilton manual
* Electrical tape
If you're good at regularly inspecting your vehicle before runs (belts, hoses, etc), you don't need many spares on 31" tires. The weak links are the t-case mounts and u-joints. Both are easy enough to replace. It's important to carry a hammer & proper sized socket for pressing in / out the u-joints. Ask me how I know.