68-69 dart interior help please !!

Hi fellas,

say, i love the 68-69 darts. I notice on some cars that the interior is different. Some of the seat leather or vynal is smooth and others have like a pleeted look. I really like the pleeted look but as of yet, haven't found what it's called or code on the vin # for this type of interior.
Does anyone know , ?? Thanks !