I know it's seem like I'm arguing over semantics, but when your tell people to dump there 318/340 for a 360 or a 360 for a 408, maybe the bigger engine is or isn't the smartest choice for that person but they should be making that decision on the right info.
Personally I think if your willing to gear it build it if not go bigger. Personally I don't care if I got to run 5.13:1 when I'm done my 273, I can see with others that would be a deal breaker.