Doug Herbert supplied titanium retainers and valvesprings for the project. The rocker arms were an off-the-shelf part from Jesel, though the stands were custom. Their specs are now on file with Jesel should they ever need to make another set. When ordering the rockers, Jesel suggested he switch over to having the ball adjuster in the rocker arm and the cup in the top end of the pushrod, instead of having a traditional pushrod with balls on both ends. This helps in applications with lots of rocker ratio or lift.