Is there a tab sticking straight up toward the camera on the inboard hole?
If so, the little rod sticking out the side of the spring goes in one hole and that tab gets bent down over the bottom coil on the spring.
It does not look like there is a tab at all. Are you are saying that the spring sits on the support and the last coil sits inside that hole? I am not seeing how that works. The car in question is a 70 Dart. Here is a more detailed pic.