I built a three of them, back in the day. I had a 58 Plymouth, JSA forumla 5, AHRA, running a 2 barrel.
My first car, a 57 Fury had one, then I did a frame off on a 57 Fury in the mid 80s.
I don't think I could tell the short blocks apart, from an LA motor, except for the valve reliefs on...