I got the quads on my short box/regular cab/ It rides excellently still. The stocks are original and the truck has 110k on it! No leakage of fluid from the shocks and they still absorb the shocks!! Heck-the heavy duty aftermarket rear shocks seem weak in comparison.

I suspect that the quads will be more firm than a two shock setup.But this firmness comes in handly when larger/heavier tires are installed .