I just got off the phone with Jim Dove of Dove Mfg. and he is going to look at what it will take to build rockers for these. They make the rockers for Indy and many others now, so they know what they are doing. The first thing he told me is that it sound like a cammer rocker arm, as in 427SOHC ford, that they build also. Will have to see what the quote is.