Geometry problems can be addressed like you said. Not sure there is a problem. You have to inspect, measure, and correct with the hydraulic rockers the same way. If there is a problem. I realize he is getting the rockers for free, that still leaves adjustable hydraulic pushrods to buy, and if it were me, I'd also run grooved shafts. Trust me, I don't slap anything together. I also don't go chasing every "best" or more "power" new thing ever dreamed up. I used to, but now I just want to enjoy what I have. I'm tired of forever changing everything for the supposed latest and greatest. If this old, imperfect stuff was so bad, why did we love these performance cars so much to begin with.