Got him all buttoned back up! Fought a couple issues after getting the car fully put back together, mainly fuel system. I guess the carb sitting for several months in a freezing cold shop killed the o-ring in both needle and seats, so I've since replaced them with some Holley 110s. Also, one of my fuel regulators sprang a leak (the one for the nitrous system), guessing the cold got it too as the gasket where the adjuster nut failed and was spraying gas everywhere.
Getting that fixed was a nightmare. I tried replacing the gasket with one I had, but it leaked worse, then tried bolting on a brand new one I've had as a spare for some length of time, but it has some sort of clearance issue where it just bypassed all the fuel regulating aspect and went straight to whatever the fuel pump makes pre-regulator. Ultimately I robbed the guts out of the new regulator, installed them in the old one, and now it holds pressure and allows me to adjust it again. Each time I did this I of course had to remove all the fittings attatched to it and put them on the other. I'm a wiz at Teflon taping pipe fittings now lol. I'll have to get a flow gauge to set it again for the nitrous system, but that's no big deal, I'll come up with something on that.