Gettign ready to install the Z-bay on my 71 Challenger and trying to determine the correct way to mount the ball stud to the frame mount.

The factory diagram shows the ball stud mounted directly to the back of the frame mount then on the other side of the frame a washer then the nut.

I think I remember over the years seeing another washer or two in the mix possibly in the inside of the frame mount between the ball stud and mount or should it be done exactly like the diagram?

Thanks.

The factory diagram is correct - feel free to deviate if so inclined...