I take that you are referring to a set of "offset shafts"?
If so, they were originally designed to help hit stock alignment specs when frame sag threw the alignment out. A lot of people use them backwards so they dont have a great big stack of shims when trying to dial in more negative camber to compliment modern tires, suspension mods etc.
Before disassembly did the car have a good alignment? What is the intended use of the car?
73z - 406sbc 430hp/475tq - TKO 600 - Torsen T2/3.73 - 12" Discs - 16" Minilite replicas - Homebrewed suspension - Mucho chassis bracing - Lots of fiberglass - Not much interior
Maybe it will see an Auto-X someday