I own a 90' K1500 Suburban(7" lift on 33's), its been driven every Michigan winter for 12 years. The truck sagged in the rear, I thought it was the rear springs, so I bought new ones. It helped a little bit, but didnt solve the sag. Then I took a closer look at the rust-a-f**ked rear end. The body in the rear sags around the rear body mounts due to extreme rust. I attempted today to repair this sag. $50 of steel and 6 hrs of fabrication and welding I re-enforced most of the body, but it still sags a little bit. I still have to do more fabrication and welding. Im guessing this repair will last only a couple years. I am planning a 14-bolt upgrade before the summers end, so I plan on keeping the truck running(I remember when my dad pulled up in the brand new burban in the summer of 90', which was handed to me in 99', so its got sentimental value) I have this idea for a SUBURBALANCH. I cut off the rear just behind the passenger doors. Then cut off the rear of an 87' or older pickup and weld that on the Suburban. Then get a long box and cut it down and attach it to the rear of the frame. The front half of the truck is still in good condition(for being that old). It would be a one of a kind truck. Is this practical? Is this going to be expensive(materials)? Is this safe? Would this be cool or what?