I put the 10" 250 lbs. rated springs in my '91 Carry purchased from the e-Bay seller chassis_warehouse. I'm 6' 200 lbs. and it doesn't hardly sag when I get in it. Ride improved greatly with no more bottoming out, stiffer, and about an inch more of lift. I don't know what lift you have but you might want to consider dropping the front differential if you haven't already. These will test your patience changing them but once you've done one side, you'll have the other side done in a quarter of the time. Good luck!!