67 Barracuda front brake drums, Alignments and tires

Mine too. Do you know where everything was set on the alignment? (meaning what the final Camber, Caster, and Toe were set to) If they set it to factory specs, it was for bias ply tires and may explain how it's handling. What exactly are you fighting? Does it pull, wander, or what?
When I hit bumps at 70, the car jumps around pretty good. Feels like its pulling a little to the right as well. But, it was really windy yesterday as well, and the car is pretty light. Just not stable and comfortable. It's been a long time since I've driven an old car but 30 years go I had a couple of dusters and one I drove cross country and it was ok.