We did the 3.0 for towing efficiency and the AT4 for the stock lift. Def don’t regret the decision as the 6.2 was so jerky. The 3.0 is nice and steady and QUIET as all get out!
I did do the brake upgrade which got me the 20” wheels, which is a silly thing for an “off road” truck, but let’s be honest, I won’t be rock crawling with this thing, just getting my toys to the rock crawling! ?