Me and another guy I know bought Rough Country 3" lift kits specific to each rig. Mine is an '85 p/u and the other guy's is an '85 4R.
The other guy reported that the rear springs flattened out to the point of the shackle hitting the frame... going over a speed bump, brand new, while mall crawling.
I recently had the same experience on a camping trip (mind you I don't have bump stops where they need to be "yet" and I've removed the lower overload spring - you know, the stubby short spring).
The kit I purchased was very, very inexpensive so I'm not complaining. However, the other guy was not happy... at all. I suspect RC uses the same rear spring for the PU's and 4R's hence the issue, as the 4R has to be heavier in the rear.
Here's my junk...
Before w/ 31's
After w/ 33's
Beat the pinch weld back, trimmed the finder back 1"
Rear did this....
So I did this....
Overall, I'm happy with it for now. It's temporary until more funds can make it my way. I can wheel it and that's what matters. Depending on your tire size and wheeling style I suggest longer brake lines, bump stops and drop drag link at a minimum.
Hope this helps! Happy shopping and let's wheeeeeeeeeeeellllllll!!!!!!!!