'A-Body Showdown' ~ 1967 Dart GT 273/235 HP vs. 1968 Dart GT 318/230 HP

Never happen,

The 273/235 HP may able to stay with a 'stock' 340 for a little bit,

Providing it had Headers and 4.56 Gears.

On the big-end, the 340 would pull way-away from the little 273.
I agree...