I attached the fittings to the Andair fuel selector and the flexible tubing I purchased from Bonaco to get an idea of the real estate used by the fuel selector. I will make up a cardboard template in order to determine the proper shape of the fuel selector cover. I found a note in Randall Henderson's website that talked about the two F-669 attach brackets that need to be installed, ref Dwg. 46, E-E. These brackets tie the two center floor stiffeners to the main spar with bolts. I have not found these two brackets yet, so I made one out of some scrap. The material is .063" 2024-T3.
Andair fuel selector with the flexible tubes attached