Replace rocker shafts for sure

Talked to Mike today. He had some great suggestions. Also gave confidence that t&d are in fact good rockers over others but stresses that oiling mods are required and broke down everything I should do. Including the crossover valley oiling tube, tapping and installing a .040 restrictor to keep oil pressure up and the common other oiling mods posted here.

He also mentioned how bushings will work with this application but without an immense amount of oil will wear quickly with high spring pressure compared to a good roller bearing setup.

Also noted not to use pushrod oiling as through the rocker will provide adequate amounts of oil with the correct modification. And you may end up over oiling and creating low pressure at high rpms.