OER Parts offers a wide selection of Body Panels for your 1976 GMC Jimmy. OER Parts offers 1976 GMC Jimmy Full Firewall, 1976 GMC Jimmy Partial Firewall 1976 GMC Jimmy Firewall Body Mount Patch Panels, 1976 GMC Jimmy Firewall To Floor Braces, 1976 GMC Jimmy Firewall Extension, and 1976 GMC Jimmy Firewall Delete Plate.