No the spring pack will not address the shocks.
If you need shocks, and i am not saying that is the case without checking them, Bilstein is the only shock I will use. Most of the common named brands are useless out of the box.
I have not checked but i think the 2500 can come with anyone of 3 different spring packs. A quick way to tell if you have the 1 ton set is the truck will most likely have 5 marker lights across above the windshield. The 1 tons should not porpoise, just too stiff. My 97 had 1 tons.