I like the looks of the PRW rockers, I wouldn't lose sleep over them being in any engine, even if they had caged needle bearings. Caged needle bearings are only as strong as what they are surrounded by, and they will last a long time surrounded by forged steel, much less investment cast stainless, which is what very high end rocker arms are made of. Those things are too pretty to hide under a set of valve covers. Thanks again for the info PRH.