Help with seat Identification 67-69 Dart Buckets

The solid seat back 66-7 material pattern 67 dart. It is also the same seat frame/ cushion as a 67 'Cuda, but different material pattern. 68-9 seat backs are carpeted/colored p-board.

https://www.legendaryautointeriors.com/1030/67-DART-GT-BUCKETS---BLACK/detail.html