I knew better than to take on a 340 six-pack in my 327-powered Nova, unless I knew the guy didn't know how to drive it fast.
There was a guy in Tucson, AZ back in the 90s who had a 413 Max Wedge Polara that was painted black, with skinny tires that would light up just about anything that came around. That sucker was a sleeper, cuz he didn't have any badges, and had a really quiet exhaust.
Back in the '70s I drove a Gremlin X without the 'X' trim for awhile. That thing surprised a few people.