Also tried a set of PRW rocker arms. These rocker arms come fully polished which is kind of unique. They are similiar to the Comps but have a bushing and a little different oiling setup. The PRW rocker arms come complete with hold down hardware while the Comp setup is just the rocker arms and the shafts. I went with the hold down kit from Hughes to install the Comps which adds another $85 to the system.