As we were installing the turbo kit on Soceurs car we had a copper gasket (not mentioning the brand) to install. We decided not to install cos the quality was not good in our opinion. So we decided to have copper gaskets listed in our products. Now we are able to do the GTS and the GT head gasket as well. We can do it by any thikness. This will let the GTS owners to reduce compression ratio on their cars and run safer. Please let us know what is the thickness you would buy so we can have those on stock. Also we have a price in mind, but you can suggest a good retail price.