The stock rockers are good to a point - but they start to get a little messy above .600 lift - When I used them back 30 + years ago - we always used lash caps and the stock rocker shaft stands had much to be desired when trying to get a decent alignment across all the valves. The Indy rollers are good choice and are somewhat reasonable when speaking in HEMI dollars. We used to be able to get the stock rockers "corrected" and bushed - but I am not sure if anybody still does that anymore.