Need information on a 1967 Dart GT

As for 727's behind a small block, all the '62-7 318's had a 727 behind them as did the 273 vans.

W R O N G !
Not ALL 62-67 318s. Some did, but not all.
The 727 was part of the towing package along with the 8 3/4 axle.
The 67 Grille is the same across all models. The GT cars had a center section that was attached to the only available grille.