The Body Armor doors are available from any 4x4 parts store. Just make sure they are listed as the Gen III versions. Here's the explanation on the difference from a question asked on a suppliers website;
Hello, What is the difference from the Gen 2 doors?
Asked on 2/4/2015 by Jose from Perth Amboy, NJ
The new Body Armor 4x4 Front GEN III Trail Doors with Black Nylon Webbing is now made in the USA with a thicker, better quality webbing and there is more adjustability in the latch for easier install. Please let us know if you have any other questions.