Just received a nice mid 80's 400RB today, early style with the power cable hard lined. I eventually want to rack this in a head cabinet, and figured I can easily fab my own ears here at work, but I don't see any spare scews holes for mounting ears to the chassis.

Did these early ones not have that? I can drill and tap my own if that's the case, but want to make sure I'm not missing something. Anybody got pics of what their original ears look like?