In case anyone is looking to mount their BlueBus, I can show you what bracket I used, but highly bent it a bunch of times to suit my needs, and where I mounted it.
So in the rear left media corner, I do not have a NAV or Cd Changer system to worry about so I had plenty of room to hang my external sub's amp, Line Out Converter and now my BlueBus. I needed to take a bracket that the CD changer/NAV system use as a holding bracket and bent it a bunch of times to sit happily behind my external sub amp. It's very easy to bend if you have a table top vice.
Find something that works for you.
I used parts from a junked x5, so the bolt to hold the bracket and the bracket cost $5.
It holds the BlueBus perfect. Like the BLUEBUS WAS MADE FOR THIS BRACKET (mind blown).
Beats having it sitting loose in that cubby hole.
Sent from my Pixel 3 using Tapatalk