There's nothing to hard about it.
Get some jackstands, lift up the back of the truck, then slide 2 more jackstands under the axle tubes to support the entire rear axle.
The shocks have 3 bolts total. 2 up on the top, and one large nut on the bottom. Take those out first. Then you can remove the u-bolts around the axle tubes that holds the shock/leaf plates. From there, its removing the nuts/bolts on either side of the leaf pack. From there, reverse order for install of new stuff.
Just watch your brake lines, dont crimp or squish anything.
Impact gun will be your friend. Go spray some WD40 on everything now so it can sit for awhile.
Remember there is a front and a back to the springs as one side is longer than the other and if you put them in backwards the rear end will look very odd in the wheel well. Ask me how I know :screwy:
Other than that it is very straight forward. Good luck.
See ya,
I want to add something else:
Please work carefully.
Jackstands are of course the way to go, but you have to be careful of not pulling the truck off of them. Especially when using hand tools on high-torque spec fasteners such as suspension. When you're sitting on the ground, pulling on a 3' long cheater bar, you have a lot of leverage to pull the truck right off the stands. You can minimize this potential by putting your feet on the truck, and pushing in the opposite direction that you are pulling in with your arms.
Put some safety blocks under the frame just in case it does slip. The tire/wheels work for this purpose just fine.
We had a tragic accident involving a member here a while before you joined. There isn't a member here who doesn't think of the Myclone accident, and analyzes the safety before he crawls under his truck while it's on stands. Please do the same.
:myclone: