I never used their stuff either. I always liked Erson, Isky, or Comp Cams. They did make a few Hydraulic retro-fit roller cams but Cam Motion has 10 times the 'grinds' as Crane. The only alloy rockers that impressed me were Harland Sharps and if you can afford them, the T&D or Jesel. I use Iron or Steel rockers on the street. The MoPar Shaft rocker system is the strongest in the detroit era of engines. The GM and Ford designs were the reason the Valvetrain industry 'prospered' during the 60,70,s and later
camshaft grinds notwithstanding.