Progress for last night. I installed the rearend.... what a chore to move that bastard by yourself, took me 2.5 hours just to get it from the front of the truck to the rear. I used everything I had, cherry picker, jacks, dolleys, etc. Heavy bastard, guess that's to be expected with a 11.5" ring gear.
Looks like the 57 has a lift on a stock 2005 chassis.
And here's why I have to chop the bed, need to move the wheel well opening back about 10"