Being just a 2/4 it's probably just crappy shocks more then anything. I used the DJM shocks that came with my kit and they were shit basically. After swapping to the Belltech shocks the ride and handling improved.
If your bumpstops are stock, they may need to be modified a little. My neighbor had to cut his bumpstops on his 06 Silvy after a 2/4 drop.
I'm running the shorter bump stops that came with the kit. I did have it loaded quite a bit going down to Tenn, I had 3 coolers full of ICE and food removed from the fridge, luggage for 4 people, and a carpet shampooer.
Not much of a load, really but it did do better on the way home yesterday. It didn't hit the bump stops on the dips in the interstate like the trip down anyways.
I'll probably replace the shocks soon! So Belltech are good? Have a part # by chance?
What about the "Toxic Shocks" made for lowered suspensions...any Ideas about those?