I finally after all these years have tried Cometics. I have them on my 422 in my black Duster and I put a set on my 572 because of my planned nitrous use. Heck we used the cheapie Felpro gasket that comes in the gasket kits for year till we had one issue. I guess some of us oldtimers are a little cement headed at times and if something works why try something else. I’m even this way at restaurants if I find something I like I’m having it. Lol