Redoing the suspension on truck?

Hey,

Got a 90 bseries truck lowered 3 inches on the back and 2.5 on the front. When I had gotten the truck the shocks where gone. Anyways wondering what type of shocks I should use to get better suspension? Planning on selling the truck soon so something not to expensive.Is there any suspension out there for another vehicle perhaps same shocks (mounting) but just like 2 inches shorter to make up for the lowering?

Thanks Jordan