Fuselage, firewall, ribs progress

Tunnel sides riveted to muffler shroud ramp and cover bases riveted to forward bottom skins.

Tunnel sides riveted to muffler shroud ramp and cover bases riveted to forward bottom skins.

Forward center section bulkhead bolted and riveted to tunnel sides. Cover ribs riveted to cover bases and forward bottom skins.

Forward center section bulkhead bolted and riveted to tunnel sides. Cover ribs riveted to cover bases and forward bottom skins.