68 Barracuda Rocker Trim

Looking for a rocker molding piece for my 68 Cuda. The contour is asymmetrical and appears to match the end of the cast "gill' piece that forward of the rear wheel well. Not sure, but is this a '68 only piece? I have one uncut full length piece and it appears to be used on either side. Car did not come with gills, so I will have to cut to the appropriate length. I've attached pictures of the one piece I have. Need to find another. Any info you can provide on this would be greatly appreciated Thanks!

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