Tranny Mount Spacers

Fellow Members, seeking assistance with this issue. '70 Challenger, 727 trans. I always thought the spacer for the rear tranny crossmember where placed between the tranny and the mount. This page from the Service Manual indicates the spacer is to be located under the the head of the bolt like a washer, which doesn't make much sense to me. Please view attachment. What's your opinion?
Author: sdcbowler