I have a collection of new rear seat covers made by Shear Convenience from my Nissan Titan Team Taxi. Seat configuration: 40/60 Split Back with Pullout Armrest and also Flexible Headrests. Leatherette charcoal grey.
Will certainly match 2004-2014 versions, as well as possibly 2015 designs.
$100 for the collection.
http://www.shearcomfort.com/.