OER Parts offers a wide selection of Body Panels for your 1973 Chevrolet C10 Pickup. OER Parts offers 1973 Chevrolet C10 Pickup Full Firewall, 1973 Chevrolet C10 Pickup Partial Firewall 1973 Chevrolet C10 Pickup Firewall Body Mount Patch Panels, 1973 Chevrolet C10 Pickup Firewall To Floor Braces, 1973 Chevrolet C10 Pickup Firewall Extension, and 1973 Chevrolet C10 Pickup Firewall Delete Plate.