"As of now the plan is too get the ole 6 up and running, do a brake upgrade. Thinking maybe a dual master cyl with discs up front. Driving her that way while saving up for possible engine swap in the future."
That is a very good idea. While doing the disc brakes check all the steering components. Adjust the steering box to the specs in the shop manual. No need for an aftermarket suspension. And for the engine swap, think bigger GMC 6, like a 270 or 302.