Europa offers kits of parts for connecting various insruments. These may be of interest or give you ideas for designing your own layout.
Fuel Pressure for 912
Fuel pressure for 914
Pitot parts for conventional
Pitot for Dynon
F26 Ceiling panel and F27 cheese wedge (Headphone mount)
Spacers & bushes. It can be difficult to identify some of these so here are the details.