Just bought an 07 SS (2wd) for my wife, and somebody had "modified" the rear suspension. There is no longer a compressor, and the wires are cut underneath the truck for the cargo area switch. The stock bags are still in place but leak completely out over a 2-3 day period, resulting in tire carnage/scrappage. I can air them up, but it's kinda annoying to slide under the truck so much. It seems that I can replace the bags with springs? I've done some reading on this site, and others, but cannot figure out where to get them, or how difficult it would be, etc.... Any help/advice is very appreciated

I'm not afraid to work on my vehicles, so it doesn't have to be a bolt in kit

-Nathan