If you have factory dual shocks in the front, eliminate one, and just run 2 front, 2 rear. It was needed back in the 80's since shocks sucked, but today's are way better.
Good luck!
i believe their intent back then was for heat dissipation, if i remember right, the quad shock setup was orginally a different part number than the single setup, they were suppose to be valved slightly lighter, so that two basically worked the same as one would, but under high speed, or sever duty shockload, like washboard roads, they wouldn't tend to fade as fast, because all for shocks were doing the work of two singles.
After really using the shocks once while going through a real bumpy wash in Arizona, i got out of the truck and felt the shock tubes, they were pretty warm.
I still currently run 4 shocks up front, although now they are nitro gas charged units, cause i was having issues with body roll from side to side while normal driving, Rough Country sent me these 4 replacements for free, so i didn't complain, and it did help with the side to side roll a ton.
Backs were changed out to these as well.
The regular hydro shocks i had seemed to be really squishy, soft, and not very controlling, after i went with the nitrogen gas shocks, i won't use anything else, they are alittle stiffer shock, but control much better.