yeah on all of my trucks i installed airlift bags that fit inside the stock coil spring so when i'm towing all i gutta do is add some air to the needle i mount under the bumper and your good. i was thinkiing of doing the same with my caprice as well because mine also sags a LOT even with 2 people in the back. ive seen dinky little imports that don't show as much struggle carrying the same load! the other week i had my caprice full of people and my (brand new) tailpipe kept scraping on the ground
. And thats with my trunk just about empty other than my amp and one 12 inch kenwood. (weighing no more than 50lbs together).