If it is for street duty, and the fit is good, it is hard to beat the regular service MS 90145 as long as no trimming is required. The gasket has a steel core, with the blue coating on both sides, and a nice sealing embossment. We fit the manifold to the heads very carefullly and like the regular Fel Pro. If you need thicker stuff, Cometic has .060, .090, and .120 thickness on their gaskets.