Early A: Have plans/diagram/photos of Rear Shock Extension?

The instructions (photo #1) don't even show a bolt or nut in the original rubber bushing location on the bottom, looks like it just gets squished from another smaller bolt located in the middle/center of the extension itself. But the installed photo (#2) looks like I see a nut/washer installed down there.

Shock Extensions directions.jpeg

shock extenders installed.jpeg