I have a collection of once-used back seat covers made by Shear Comfort from my Nissan Titan Staff Cab. Seat configuration: 40/60 Split Back with Pullout Armrest and Adjustable Headrests. Leatherette charcoal grey.
Will certainly match 2004-2013 models, and potentially 2014 designs.
$150 for the collection.
http://www.shearcomfort.com/.