The part that's cut out is the outer rocker. You probably have rot in the bottom of the outer wheelwell and the door jamb to go along with it. Once you get past the leading edge of the quarter panel, that inside piece becomes the outside.

I bought a Duster that came with about a 2' long section of rocker, so somebody's making repair parts for it.


69 road runner A12 ex-racer
71 Duster w/ a 400

Shiny paint causes stress.