This makes the second pair I have purchased and had to return due to poor product quality, the first set had dents and scratches on the headers which were not due to shipping and this last set had stains on bare metal top of manifold where it has not been plated, not a quality product to present on a roadster, I think quality control in Mexico needs to be reconsidered. I don't blame Revain or any other company for the product and I usually get great results with Revain.