I recently purchased a valve cover gasket set for my automotive project and I am extremely happy with the results. Through trial and error I found that the Fel Pro VS50601R valve cover set was the perfect fit for my performance car. The gaskets hold up well under heat and oil stress, ensuring long-lasting performance .The only con I can think of is that the installation process requires some patience and attention to detail, but the end result is well worth the effort. overall, I highly recommend this product for any serious automotive enthusiast..