Today with a little bit on History on this one. Its Hard to find infos but from my understanding goes the Story on this BO29 like this.
John Hagen bought the Super Stock Barracuda paint it Green with "John Hagen" on the Doors. Later he put "Super Cuda" on the Doors. Around 1973 he repaind the Car in Candy Red and race it. At the end 70s he Sold the Car to Rick Johnson and he racing it in the 80s and 90s.
Again if i am wrong please feel free to let me know!.