67-69 barracuda rocker trim

The piece at the rear quarter is cast pot metal. It's hollowed out on the backside too. It would collect a double fist full of crap and cause more rust issues. I sold gills and spears of my 68 long ago.
If the aftermarket doesn't offer wheel well trim specific to "with rocker trim" you will need to buy the "all others" trim and hand fit it to the gills.
Just a bunch of FYI