Wanting to replicate the original quick jack mounting hardware. Appears that the the bolt head was inside the body (or was it threaded rod?) and the nut was visible when looking at the quick jack. The end of the bolt (or rod) was slotted for a screwdriver. Here's a pic I found from what appears to be an original 427 car.
But I am having a tough time figuring it out. Is that a split washer on the outside of the nut? How is that possible? Any help in deciphering this pic would be of great value.
regards,
Ron