The most reasonably priced component used on the Civic 1981 (b) 4dr1500 (ka,kh,kl) Outer Panel is the Stiffener, Rr..
The sub assemblies and components that make up this Outer Panel include this Panel Comp.,roof, the most expensive part.
This OUTER PANEL assembly utilises two Stiffener, Rr.(s) - the highest specified component.