an untouched original in very good condition
should fetch a higher price than a 'restored' one, but when you look at what folks
ask, what you don't see is what folks
get, if anything .... any vehicle is worth what someone will pay for it, so if you're concerned about the "return on your investment", you don't wanna be "investing" in an old truck, there might not be a buyer by the time you decide to "cash in"

which is to say, do whatever you prefer to it, with the understanding either route will cost you more than you'll recover
Bill