Huh??? I am kind of curious what year is the truck? The reason I ask is, I had a 99 3500 with stock shocks that worked really well. I then traded it in on 01 3500 and the thing handled like an old caprice. It rolled through evey turn. So I decided to get a set of the 9000's. When i removed the stockers I noticed they had alot of air in the shock when i pushed and pulled on it. The 9000's felt fine when i did the same thing.
After installing them, I took it on a normal run where i let the truck hang out and power through the turn. Sure enough all the body roll was gone. Now the next test, drive it out on the freeway & see if the normal dips off bridges made the truck feel like it was bottoming out. Nope sure enough it went over the dips like there wasnt anything there. Now I did have the settings on 5 which is the stiffest, but that is how i like it.
Comparing the build quality of the 2 shocks, the rancho's were a better built shock. I would suggest finding a spot if you havent already did so, to push the truck to its "shocks" limits. Find a couple of spots, usually sumthing your familar with. (route to work) Then swap them out, and take the same route. If you dont like the results, swap them back.
Havent had a problem withthe 9000's yet.
I got them for around $56 each off the net.
Cole