Hey Bigdaddycodes, I have used Geno's Garage for parts before. They pretty much sell diesel parts (including ecodiesel) for the most part. They do have replacement seat cushions, I would assume they will work for a replacement. Here is the link:
https://www.genosgarage.com/category/seat-cushions
I also tend to chew up my cloth drivers seat especially with work. I can't count how many cheap seat covers I have worn out. The last time I went to replace my seat cover, I noticed that I have already started to wear through the side of my seat, so I finally bit the bullet and got some custom fit seat covers. I specifically purchased the CoverKing Leatherette seat covers. I love these seat covers! They fit great and so far have been great. Probably the main reason I like them is that they are made of a strong vinyl material, but to the average person look and feel like leather. Obviously, you can tell the difference if you really look at them. A bunch of my buddies thought that I had leather seats. I ordered my covers at Realtruck.com. I would upload a picture of my interior, but I can't figure out how to upload a piture to this
Hope this helps