In the stud mounted stuff, I have had good luck with the Crower SS rockers. Second in line would be the Comp. steel stuff although they have Chinese needle bearings. In aluminum body, Harlan Sharp is the only stud mounted rocker I would use. Although they do have failures, they have great customer service and promptly replace defects quickly with no questions or drama. I won a set of Scorpions in a drawing at PRI several years ago. I didn't install them. Traded them for some other stuff. Too many failures in multiple engine platforms. We have had at least half a dozen rocker arm failures on the dyno over the last 10 years. This is on many different engine platforms on student engines. In EVERY case it was pretty brightly colored aluminum body rollers from off shore suppliers. Pretty risky IMO.
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