GTS or GSS

There's the story. I knew they were made. I had read about them before. Thanks for sharing that.
That article perpetuates the myth that Mr Norm "invented" the 383 A body...see the real story here...The First 1967 383 A-Body, 'Barracuda or Mr. Norms's Dart' To summarize, Plymouth was already installing 383's in Barracuda's at the factory in Sept 1966, for the '67 model year, long before Norm installed a 383 in a Dart.