STeve 1958..that's funny. I bet that drove you about half nuts. I don't know why I thought I was the only one. I'm in good company. As far as using the part, if I was to use it, the engine was rebuilt so I'm not completely sure if a longer head bolt was used, but it seems it would just replace the flat washer on the bolt at the head and at the exhaust manifold. I don't think I will install it though. Would it hurt to undo the head bolt? Aw..don't need it. Thanks all