a lot of guys with older MoPars run them in place of the flathead sixes, but other than that, only a few show up in fenderless style cars. they're strong and economical, but difficult to install in anything with a short engine bay.
Here is one sitting at Bakersfield last year in a little modified roadster. It got a lot of looks and then proceeded to scare a lot of folks at the starting line. Off like a rocket with hardly any wheel spin. Came back a few weeks later with a really nice intake manifold setup and showed just how potent it could be. When built and setup right the Slant Six has a lot of potential. Normbc9