They cost more, but TTI are the best fitting header. No 90* oil filter adapter needed, they don't hang below the steering link, no oil pan clearance issues, thick flanges & tubes, good spark plug access and the 1 5/8"-1 3/4" step works well with any small block that doesn't get too wild. (If you ever plan to upgrade.) Made best power on a mild 360 and they are working well on my low 11 second 360 Dart Sport.