A very good question. My interest is genuine especially now. My machine shop ordered the cam and I would love to be able to tell if its the right one. Then, after that question is answered, I would like to know if the machine shop sent it off to the cam grinder to give me 'performance characteristics', and its hydraulic, what do they do to make it better? I have always been told that if you want performance, go with solid lifter cams. Its a worthwhile conversation to have.