[Ski-me]

Finding used springs in that era are more than likely going to be on their last legs too....a lot of springy feeling. I'd go to a local spring shop and get some new ones ordered up. That helped my blazer a lot! Just standard, stock ones will probably give the truck some new life.

Also, take a look at your spring bushings. Both front and rear. I'm sure the rubber is probably worn out by now so you may have to replace with new, poly ones. That will help tighten things up a bit.

These will help but it may not be everything. You could also have some worn rivets on the spring perches, or frame connections. Ball joints, and tie-rod links could also be contributing. Springs could help a decent amount though.

I also added a little more height in my 91' suburban because the tend to squat a little in the rear (even more so with worn springs). I used a 1" zero rate lift block to help out.