I have a 1990 Suburban I have rebuilt with a 6" SkyJacker lift and a 3" body lift to fit the 38" TSL Radials, you can see the build-up on my web site www.BURBEN.com I have a few questions I feel this site will be able to help with. I am swapping in the 1-ton running gear from my 84 K30 Plow Truck "Rusty" 1) Is there anything special I need to look out for in swapping these in? Will they bolt up with my current U-bolts? 2) I have the 12" front Superlift springs and will be installing these at this time too, what is the best way to set up the cross over steering? I have a 84 3/4-ton 2wd steering box. 3) I saw pictures of the echobit flips but am concerned with how they keep the shackle from rotating back and forth? Does any one have any other pictures of them installed? 4) I have seen multiple setups of the front shackle drops, is there one philosophy that is better than others? I would like to clear 49's and safely drive it.