I don't have any pictures of the back of the cluster, but I can tell you that I ground it flat down so that there were no weird protrusions from where the old gauges mounted, then I just bored out holes so that the new gauges would fit snug. This way, the Autometer gauge pod holders snug up against the back of the old instrument panel and hold the gauges and metal panel in place. I did not use any glue or bolts. The gauges literally hold themsleves in place.
