I think that was the prototype sketch for the model that came out the following year.

?

16 hours ago, Zed Head said:

I had thought about making some slotted rubber pucks for the rocker panel seams but at home I just used the diff or the front cross member and the sub frames were dented anyway.

I wonder how well a Z would lift using the four points shown in the Owners Manual. Is that not the ugliest drawing of a Z ever? 1973 Owner Manual. Looks like the summer intern did it.

Yeah this would be awesome. You can probably start with 3D printing prototypes. I know BMW has something similar with an adapter that can be mounted in a standard hydraulic jack. I believe it's called a "Jack Pad" or similar...

I've been using slotted hockey pucks as lift pads for several years. They work quite well. Just make sure that the slot is wide enough to keep the puck from wedging itself onto the pinch weld strip and deep enough so that the load is taken by the rocker and floor panel metal on either side of the pinch strip (rather than by the pinch strip itself).