Keep piling spare parts in the truck for "just in case" will fill up the truck.
Don't over work the truck and it should be fine. Maybe an extra belt, water/ coolant, and maybe a can of gas. Maybe a spare set of points. A few basic hand tools.
I drive my 58 everywhere and don't carry any thing other than spare tire, jack and lug wrench. Other than the price of fuel, wouldn't bother me to take it on a 1,000 mile trip at all.
