Reproduction Aluminum Rocker Panels that mount above the Mid Year side pipe covers. These are thinner than the rocker panels used with under car exhaust. Exact reproductions of originals give the finished look to your side pipe equipped C2. Original side pipes can be adapted to all 1963-1967 Corvettes. If your mid year didn't have side pipes from factory, check our Factory Assembly Manual (AIM) for trimming of lower rocker area...The option number was N14.