Next is the assembly that I will call the Firewall Offset Box.
This assembly has a number of purposes. It extends the firewall further forward of the cowl mount, as necessary to position the engine appropriately within the large cowl. It forms a compartment for the fuel tank; and, the bottom of the sides are contoured to the airfoil to serve as a wing saddle doubler.
Set the front side of the firewall down and position one of the side pieces of the box so that the airfoil-contoured side aligns with the bottom of the firewall. Square the side 90 degress to the firewall and glue. Repeat with the other side.
