1968-72 GM A body, Chevelle, El Camino, Monte Carlo, Core Support Mounting Shims 4 pc These are the shims that are used to adjust the height of the core support to align the door gaps. They are the large correct shim that go between the rubber mount and the core support. This is a factory exact inline tube reproduction silver zinc plated. If you are building a concourse car this is a great detail item that is usually overlooked. They are always missing.
