Small block bottom build horsepower limit

Guy, I don’t really care. PBR made a very non tasteful comment about a friend of mines motor. I knew it had been in a car a while.
He got his dick caught in his zipper. Not the first time.
And the guy out in Nevada isn’t my buddy. Just a guy who bought the motor and is racing it. Never met the guy.
Ok, as a engine builder, I'm just curious to know the particular details of what it runs. If there is no actual data to back it up, so be it. I'm not concerned about pbr, he can speak for himself, but his results are all over this site, for all to see. He gets more out of his builds than most, that's gotta say something