Calling 63-66 Dart Experts

Does anyone happen to know why the 63-66 Dart GT window felts (cat whiskers) would be different than those for a non-GT hardtop? I'm having a hard time finding what the difference would be. The gentleman at DMT didn't seem to know, but did say he'd reach out to their supplier to try to find out. Vans and Dante's both said they're the same. Any ideas?

Screenshot from DMT's website:

View attachment 1715877210
I have a complete set for a GT EXCEPT for one. right side rear inside. Was missing. I will give them to you for shipping. NEW!!