Deburred all edges and holes of forward baggage parts. Countersunk/dimpled F-866D mounting plate and lower forward baggage bulkhead. Dimple/countersunk all nutplate attach holes of inboard/outboard stiffeners. Countersunk all stiffeners. Primed all parts. Rivet all forward baggage nutplates. Back riveted stiffeners to forward baggage floor. Rivet F-866D mounting plate to aft side of lower forward baggage bulkhead. Clecoed upper and lower baggage bulkheads to forward upper brace. Match drilled firewall to forward floor assembly. Dimpled/countersunk 9 holes in center bottom floor flange. Countersunk firewall lower angle to match.