I thought there was a 258 as well. These were my dad's favorite engine group. As a kid we had lots of them. Even our irrigation wells ran them. I have a 413 from a Dodge truck. Was going to power a Bonniville car but it is too big for the vintage classes.
There was speed equipment made for them and they did very well. So did Hudson and Studebaker until the magazines and after market selected their favorites.
