1967 Dart GTS Parts Book Info

I was looking in my 67 Parts book today and found this.
I think it's very interesting based on what we think we know about 67 Big Block Darts.
So as you can see in the following pictures, first one is the Hardtop second is the Convertible.
REF 2 Lists a 383 4 Barrel Emblem.
Below there is a listing for the 273 4 Barrel emblem.
There is no listing for GTS Emblems.
On the convert there is only the 383 4 Barrel Emblem listed.
The Darts pictured on the identification page do not have the 383 emblem pictured.

So what I see is there was some big block thoughts going on early on.
The cars pictured usually are pre-production or Pilot Cars.
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