@Joe_Bro
You're going to need a lot more than a little box of tools for that rig. I'm a mechanic, and I carry everything I could possibly need, too much by most standards, but that's me. You are going to need all of the basics. A good set of sockets, both 3/8 and 1/2 drive with rachets and extensions, combination wrench, set to 1" along with a few metrics. Pliers, vice grips, needle nose, and side cutters for a start. Screwdrivers, hammers, at least one good ball peen, and a pry bar or two. A good hydraulic jack is a must with a heavy-duty 4-way tire iron. Duck Tape, fix-a-flat, WD-40, a good flashlight/LED work light. A good multimeter. Hand cleaner and lots of rags. Wire cutters, wire strippers, electrical tape, wire nuts and connectors, a good selection, and if you solder, it's a handy item to have too. And I could go on.
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Wow yeah its a tough choice on what to bring with an old truck like that. I would say if the truck is fully restored (at least the drive train) you may be able to cut down some of that list. Im a product nerd, love to head off disasters... I never leave home without "Slime" (long term tire sealant, fix a flat for quick flats if you dont have air), "SUGRU" silicone putty, silicone tape for any leaks & MORE uses.... I would recommend redline engine coolant booster or some other brand in any hard working rig ESP in hot weather, it works. As with any products it pays to learn how to use them, what their limits are etc... Last year i helped a poor bastard by the side of the road with a blown headgasket... He was going to junk the car, told him to try "K seal", for about $13 its worth a chance since your about to junk it....It worked! It was a crap shoot but i like to carry "K seal" just in case. The #1 cause of break down is coolant probs so be prepared for all coolant probs. Happy Trails