Is there any experience with this rocker arms? I'm thinking about the rocker arms with 1.55 rocker arm ratio. I have 3/8" rocker studs. https://www.jegs.com/p/PRW/PRW-PQX-...-Stainless-Steel-Rocker-Arms/3132886/10002/-1 An alternative for me would be the Comp Cams Ultra Pro Magnum, they are steel. I drive most of the time on the street and some strip use. I drive 5-6.000 miles a year and we have no speed limit on the Highway, so the enigne works in the 3-4.000 rpm range for hours.