Looking for someone to inspect car in Nashville, TN area

Might be a 273 not sure. If it has dual exhaust may have an other than stock engine in it. They came with single exhaust.

@toolmanmike has good experience with the 1966 Darts, he probably knows what engine came stock in there. Guessing it probably has the 7 1/4 rear end with the 3.23 ratio in it for the wagon. Good to find out what it is, or if that has been changed.