Charles-
Can I assume you want this truck 100% original/restored to original/original equipment? Or, are you wanting to know what was used?
Oil filler cap Glass filter Good gosh there are some expensive spark plug wires available.
Both the wire rings and the tower-type hose clamps were available in 1959. That means both would be correct.
Here. First time I've ever been to that website, hope it helps.
Brad