Schlud,
Have you experienced problems with alignment after a rearend change? The reason I ask is technically, (now mind you this is based on theory) when the rearend is lifted and the front end is not, the truck should rotate around the front wheel bearings and the front end SHOULD be unaffected. But that doesn't consider the weight transfer to the front wheels if the rear end is raised higher than the front. The repositioning of the center of gravity could put additional weight on the front wheels, causing the front end to drop slightly from the extra weight. For our newbie, sorry I got technical, but since I am getting ready to make a major suspension change and have never done this on an IFS truck, I was curious.