Considering very strongly of doing the same on my 87. Jegs Spindles or the Summit Brand Spindles seem to be the best value I have found for the front. Anyone feel free to correct me if there is a issue with either of those. Hangers & shackles seems to be real popular for the rear 4" drop. With the shackles there is the need to notch the bed rail which I would rather not have to do. So I am undecided exactly which route for the rear myself. I will admit that I have never lower one myself before, but have helped on some of the homemade DIY jobs that rode pretty solid. I don't want a big drop myself either just enough to close up the wheel wells alittle. I may not even need quit 4" Drop in the rear. Any advice is appreciated.