The rear of our trucks have basically the same suspension as a jeep tj or jk. Jeepers have been dealing with this since 1997, yes I have a jeep, and we have lots of aftermarket support for this issue.
If you drop the rear 2" your fine, If you go 4" or more your in the ball park of needing a drop bracket and an adjustable panhard. One can get away with just a drop bracket until your buddy follows you somewhere and then asks why your truck drives down the road crooked(was it in a wreck?). The same can be said for an out of alignment to the axle adjustable panhard bar. Some will notice the rear of the truck dances around a bump/corner like a empty 3/4 or 1 ton truck. I know not every truck is exact and not everyones seat of the pants feel will be the same, but you'll be time ahead to get what you need the first time. Adjustable panhard and drop bracket.
Just my two cent coming from the jeep world