Going to order a Big Horn 4x4 crew 6'4" box North addition, 5.7 hemi, LED lights, 20" wheels, BUG, bucket seats, blind spot, and 3.21. My biggest decision was the rear end. and painted bumpers. I was pretty set on a 3.92 but when comparing my F150 crew with a 5.0 and 3.55 the 3.21 was a good fit as my heaviest load that I will pull is a 5500 pound boat or enclosed sled trailer. Anything else I should think about before ordering?