Hi Dan, Since you live in SLC, ask if someone near you has a stock truck that you could take a ride in or even drive. Assuming you have limited exposure to these old trucks it might either change your mind or strenghten your resolve.
These trucks (stock) are slow, rough riding, thirsty,and noisy as compared to modern trucks. A LOT of money and time is essential to make them enjoyable as a DD; unless you have a special connection to that era, you may soon grow tired of a stock truck. Modernizing it very quickly becomes expensive-- drop into a hot rod shop and ask about the cost of some of their projects--
I'm not meaning to discourage you, I just want you to have more input regarding your decisions about your truck.
The guys here are great sources of info-- ask a lot of questions while you work on your baby.
Welcome to the group & good luck, whatever you decide.