I did the passenger side seat for good measure.
Although there wasn't anything wrong with the seat, I went ahead and, shall we say, performed preventative maintanance on it.
My original post on this topic was from another forum by another author.
The following post is from my truck with my pictures.
Enjoy.

Amazingly enough, it was in perfect shape. But I just bought this
babee in September of 2008 and I want it to last me through the long haul. So I went to work on it just as I'd done the driver's side.
Important Note:
The initial post and pictures are from cntryby of the Dodge Diesel Forum. They are his pictures and his truck. The pictures to follow are from my project on my truck.
The tools you'll need:
Ball Peen Hammer and Phillips Head Screw Driver.
I don't have heated or motorized seats so the upholstery removal was quite easy.
If you have either, it may involve more screws or a bit more intense and detailed parts removal.
The Materials:

3M Super 77 (washes off your hands with soap & water)

1"x22"x22" Green Foam from Hobby Lobby (approx. $5.99)

1"x14"x14" White Foam from Hobby Lobby (approx. $3.99)
I used 2" on my driver's side and I like it better.
But, the store was out and i settled for 1".

1 - Half Yard of Burlap from Hobby Lobby (approx. $2.99)
If you cut your pieces right, you can use 1/2 yd for both seats.
It all depends on the condition of the foam. Get 1 yrd for good measure.
Removal of the upholstery is pretty easy, except for the front hook. The nice thing about this is Dodge no longer uses the old hog rings. The plastic hooks are sewn right in. It can get tricky. Push down on the seat cushion for slack in the material and the hooks won't give you much problem.
Here's what you'll have after you unhook the seat cover and remove the cushion.

Take your ball peen hammer and knock down any slag, sharp metal edges and so on.
You can glue burlap over the edges if you'd like.
I didn't on either seat, but it can't hurt.
Glue the burlap to the bottom of the foam to prevent snowing under the seat as age and wear sets in.
Although nothing was wrong with this cushion, I went in and reinforced it with extra burlap for good measure.
Use the 1" green Foam on the top of the cushion.
I'm not a professional at this as you can tell.
Thank goodness the seat cover will help the foam conform to the right shap.
Also, if you can find 1/2" foam, it'll probably do you better.
The knuckle buster of it all is getting the cushion back in position.
There's a tab that has to be pulled over the back part of the seat.
Once you've got the seat in position and aligned with the recliner adjustment arm, you're ready to take it home.
BE SURE to match up and attach the velcro parts of the seat cover to keep definition in the seat.
Viola! Ready for the road.
The passenger side seat isn't as POOFY as my driver's side, because I only used the 1" foam under the base of the seat. If you use the 2", be prepared to ride in luxury
and a little higher than usual until the seat settles in. My passenger seat won't be used as much as some others, so I'm not concerned with the difference. It just looked really flat along side my newly repaired driver's side. I had to attempt to make them match....and they do to the unknowing rider.
Hope you guys like and approve this thread.
I hope you get your seats back in shape as easily as I did.