I had time to finish countersinking, deburring and dimpling all the firewall parts and then assembled them one more time to make sure all is well before I alodine and prime paint. The firewall, recessed box and ducts are stainless steel and will not get painted. I upgraded to the stainless steel ducts for better fire protection should there be an engine fire. Also upgraded to a parking brake valve (base shown in black). It will require another cable somewhere. Some builders did not install a parking brake... just a matter of preference.
Firewall dright interior corner before the firewall bracket is installed