Intermittant starting

Car is a 74 Duster with a 318. Sometimes it starts, sometimes it doesn't.
I already replaced the Ignition switch and it still does it.

Sometime you can pull on the gear selector (to put it further in park) and it will start. When this doesn't work, I can leave the key on and hot wire my starter relay to start the car.

This is getting old and this car needs to be my daily driver in a few days.

Any ideas?