There was a car that ran with the CRA sprint cars based in SoCal back some years ago now, It was the Bruce Bromme built and owned cat that debuted in 1962 and raced competively until around 1977/78, when the lighter built cars started out running this car more and more....
Story was told that the Bomme's had a new frame built and ready to be finished off, but Bruce Sr. supposedly said, "Why retire the old car? It's still winning."
From its debut in '62, until around May of '73 it was powered by an Offy.
Again Bruce, Sr. said if he could have gotten more cranks for the Offy, he would have kept running it.