the underbed spare was the standard, the bedside spare was the option, don't think dual exhaust was ever factory on the truck
take the glove box lock and get it changed to match the others, but take one of the other locks to make sure the new key really works ... a worn key may not be duplicated well
check the Old Car Centre in Langley, they'll have repro e-brake cables - the front cable and the back ones are both available, but not in the 'regular' supply chain, I got the last back cables in Canada a couple years ago
Bill