I have a 1932 Ford 2 dr sedan all steel body on original boxed frame. The previous owner installed a B'tchin brand firewall and welded it to the body. A B'tchin brand front floor panel also came with the deal. The new firewall mounting brackets are on the inside of the body so when I put the floor panel in place the body mounting bolts are covered up. Is this normal with this brand of firewall? Should I fabricate removeable plugs in the floor panel so that I can bolt/unbolt the body as need be?