As for the TBM there are no APM 2.0 mounting hole's so i had to make some. But first the result!
I wanted a clean look, and good reception for the GPS so my APM 2.0 is mounted on top. Here are some picture's of houw i did this.
upside down, the long srews fit in 4 of the 6 hole's at the "center" of the top TBS board.