No, I think it was a R mopar race block.
Ron's was a street driven 9 second 71 Demon.
I sorta beat him once at Irwindale with my Cortina. I got to the finish line first, but had to red-light to do it, lol.
He went 6.45, I went 6.51. We both got faster.
(The new Demon redeye he has now is a mid 5 sec car.)