Anybody running 10s with a small block and factory iron heads

Not always a bracket race....friend of mine in his F/SA 340 Barracuda 68 FB has two heads up races in the 1st Divisional Race in Vegas......1st one to the finish line wins

right. Winning class is the only time it matters. And sometimes you might not even have another car in your class.
But its 95% bracket racing. That is where the primary focus of the vast majority of guys is.