Back in the day, I looked at new 280’s, but ending up buying a used 240, very impressive for a 6! My friend had a Formula 350 that he added a 4bbl to. One night I was following him to (I don’t remember, a bar probably) and at the passing zone I jumped on it and blew right by him! He flipped out, gaining on me, pulled into the oncoming lane to pass, he was creeping up to my rear bumper and oncoming headlights appeared, we were maybe 120. He was so angry he did not back down, he was ready to play chicken with the oncoming headlights! I backed down and let him go.
Later he did some serious mods, guess he just couldn’t live with a 350 that could barely keep up with a stock 6!