1970 Duster project in Sweden
I'm a fan of trucks, but that GTO needs to be driven, just as you say :)
Ab-so-friggin-lutely
But, just like in the medical field, automotive (and in my experience aircraft) maintenance is often about triage when it comes to which one to fix first. As much as I'd like to take on the tough job, prioritization of processes typically results in getting a healthier "fleet" in a lesser and more controlled amount of time. The broke one will be down longer, especially with low manpower, but you'll be able to enjoy the others. The guy I'm talking about currently has three non-drivable or semi-drivable vehicles. The 70 pickup, a 92 pickup, and the 69 GTO. The 70 has a running small block, but it needs a few wiring fixes, speedo cable, all weatherstripping, bench seat installed, collector gaskets, and some shift linkage/TV cable work. The 92 pickup has a mild 350 stroked out to 383, but it needs a new fuel system. He's tried to run a carb in it before, but couldn't get it to play nice so he wants to buy an EFI system. Apart from a properly set up fuel system, that one's ready to go. Then we come to the GTO.
longblock finished to include oil pan, valley pan, intake manifold, carb, distributor, accessories, valve covers, fuel pump, probably hardware, etc...
TH400 rebuilt w/converter
check electrical
depopulate junk/unused parts
needs complete exhaust
check rear end
rebuild driveshaft
...probably a good bit more. He has most of the parts there, but they all need to be at least checked for serviceability.