I put a set of gabrial air shocks on my 87 CV, wow they are great!! Its a 70/30 shock over a 4.75" air lift!! I went to sams club and got food, got about 500 LBS worth (dog food 112 lbs, other stuff 460 lbs), I loaded up and filled the shocks to 80 PSI, raised the rear and drove great, acted like nothing there, never bugged over drive too. It is a slightly stiffer ride. Later today I hooked a trailer to the car (I put a big 3 ton hitch on the car). Drove to detriot and loaded the trailer of car part at a guys back yard. About 3/4 ton worth, filled shocks to 200 PSI, drove great, no fish tailing, swaying, bouncing, or ruff ride, almost forgot I had a trailer. Stopping was not effected either. Last time I did this with stock monroe gas shocks I blew them away, shot gas out the top. I'm way happy now. Also got a treat for the CV at the yard too, 1991 ford 302 lighting air intake along with all the fixings and a brand new AOT tranny made for heavy duty hauling trucks. I think I'll keep toying with crowns, they have so much potential.