74 Duster (318) ignition not working, not getting spark

That column is pretty bad looking. I'd replace it if you can. I believe the interchange is '74-6. Next time you try to start it with the key, put your foot on the brake and wiggle the shifter with the key in the start position. Also try it in neutral and with a wiggle too if necessary. Shift linkage and/or neutral safety switch might be out of whack.