Thank you, although it breaks down pretty evenly both ways that also shows there is no right or wrong answer.
I will wait until I get really dig into the truck and see where I stand at that time. If I find I have significant work in the electrical area it might make sense to look more seriously at going to 12v, if things look pretty good as is then no rush.
The truck will be a project, used locally as an occasional hauler to the dump or from the hardware store for home DIY projects. We have a 50s themed diner that attracts old cars on the weekends and a couple times a year there are old car events in town that might be fun to participate instead of just drooling over others vehicles. Very casual, no plans for any kind of hard core contests that check the purity of every nut and bolt used in a restoration.