As far as I know, nothing exists due to the rarity of the motor and the fact that the rockers are specific to the Boss 429. He//, even the intake and exhaust are different! I feel they are unneccessary, as the street rocker is the same one used for years in Nascar and drag racing. An oddity about the street motor rockers is that
oil is fed to the rocker THRU the pedestal, as opposed to thru a pushrod. On the solid cam motors, there are 4 unique-to-Boss9 plugs with rubber orings that restrict
oil flow. One thing for sure, and that is that IF these exist, they will be one-offs by somebody like Iskederian or Yunick, and damn sure not on a shelf at AutoZone!
The stock valvetrain is good to 8500 RPM if set up properly, and I don't see too many Boss9's getting into that territory anymore.
