I ended up mounting the grounding block to the underside of the mount. I used the screws that mount the Bussman to the mount. I tried to get a pic of it, but it is tight quarters in there so hope it makes sense. I think I went to Home Depot and purchased longer screws, if I remember correctly.@JG1967 Thanks! I'll search again for your DIY. Just to figure out how I missed it I will be reading it!
edit: @JG1967 "Shrockworks does the heavy lifting on the Bussman" You were not kidding! Doesn't look like enough room on the bracket from Shrockworks, have to figure another way to do the grounds.
@bazross @ZerosFJ Thanks! I'm a little slow this morning, no coffee yet. I spent days searching for info that was in front of my nose. Should have asked here first. I really try to search for answers first. Honest