Anybody know where to purchase rocker arm specialist rocker arms. I saw some in an older magazine article for 500 cu in build up. Has anybody used them? Are they good quality?

They are the best rocker arms available for street/strip use. Ideal choice when running a roller cam on the street. But they are hard to find and are about twice as expensive as the cheapo Chinese knockoffs. I use the RAS rocker arms whenever I can.