If you want nostalgia, there's nothing wrong with an Olds or a Caddy . . . or a Buick nailhead. It all depends on how old your "nostalgia" is.

I've been in rodding for 45 years, and the flattie was pretty well gone when I started. I saw a LOT of olds and Caddie rods a few years after those motors popped up in '49.