^^^ Agree, Scorpion is among the best, if not the best stud mounted rockers. Very nice, like jewelry, and American made down in Florida. Gauranteed against breakage for life, good for like .800" lift and 1000lbs spring pressure. Company has very good customer service also.
They also make a very nice roller lifter, and are branching out into other engine parts. Supposed to be a good shaft rocker set up coming from them soon.