Well I had a chance to really test out my truck this weekend. The good news is the front end held up and is still in the truck!
I had one issue with my front springs though- I had pulled out 2 of the leaves to make it a little lower, but they flexed out way to much and bottomed out the shackle. So I put the 2 springs I pulled out back into the pack,. At a hard flex it did it again....so back to the welder and welded on some "bumpstops". Very simple and easy fix for that.
Went back out to the same spot to test out the new front driveshaft. I ended up stuck for 2.5 hours with water up to my headlight on the drivers side and about 5 inches of water in the cab. My friend with a 01 f150 (who just put on my old 38 tsl's) twisted his front driveshaft and broke a cv axle. trying to pull me out.
Then the superduty started snatching.... Actually broke a reviever in half-which I have never seen before and I also bent my rear leaf spring.

After an hour of digging and pulling I finally got out. I realized a couple things....I definatly need a locker in the rear, and I need some stronger springs.
Im think I'm going to go with 3" wide instead of my current 2.5's.
Im sorry I have no pics of the stuck, my camera was dead and it was pitch black out so I couldnt use my phone. But heres the shackle bottomed out and the bent spring.

 

the way your spring is bent when you compress the suspension it is moving the rear spring eye back too much. It might help to move your shackle towards the rear, but i think you need springs with proper arch

 

Ooooffff all I can say is ouch that really hurts, now my guess would be your rear leaf probably bent when being pulled out of the mud. But what happened to your front leaf pack that layed the shackles on the leafs?

 

That front shackle is something that I am sort of working the bugs out myself:

Lengthening the shackle has hepled, but you have to make sure that you do not upset the caster.

Where did you add the bumpstop? You did add it in the center of the spring right, and not out at the shackle itself?

How did you bend a spring with the ladder bar still attached?
Time for super long 64" springs now?????

 

I had hit a couple of very deep ruts which compressed that spring and binded it up at the shackle. It didnt take much to pop itback down, got a prybar in it and moved it down about 1 inch and it popped back into place.

I dont want to move the hangers back more, because my shackle angle is just about strait up and down. It is favoring the rear just a bit.
I added the bumpstop at the back of the hanger where it is flat. That way the spring will hit that before it gets to the point it did and bind up. Ill get some pics up soon, its already dark here.

And I honestly dont know how that spring bent. I had a wall built up around that tire. It was actually hard ground over my tire i was dug down so bad, so alot of digging was needed... and it took alot of hard tugs to get me out. But crazy stuff happens when your that stuck and being pulled that hard. Just another area that needs to be beefed up...thats the way I'm looking at it.

With the 64" springs, how far back did you have to put your rear hanger/shackle? Only reason being my bumper has a bracket on it about 10 inches long, so I would have to do some modifying to that if I go that route. My rear hanger is butted up to it now as it is.....

 

Thats pretty brutal.

 

I had to move the hanger back quite a bit. Actually the rear bolts for the original hanger mount is now where the front bolts are attached. The same is true for the front hanger. Just moved the hangers apart about the distance of the hanger itself. This will require that you move both, but the chebby spring is the same width as your HB so you can keep you hangers.