Yep, run green keys with cranked bars, take the rear 2" block out in favor of a 4", and install a 3" body lift. Then you might need some minor trimming on the front valence, but it'll work. If you don't want a suspension lift, this is the cheap/easy route.
I'm gunna agree with onetall96. You can put them on with a 3" body, blocks and a crank. It might rub a bit, but will work. I would stick with a 8" wide rim, I have seen it done on 10" wide, but it rubs to much to be worth it.
I have an '02 1500HD and I am running 35x13.50's on a set of 20x9 with 5" of backspacing. I put the Rancho 2-4" kit on it. PN-6550. It was a breeze to install and it rides great.
If you put keys or crank the bars up you will not like the ride. I tried it to clear a set of 315x70r17's and it was like riding in a log wagon. Yes it is cheaper, but like they always say..you get what you pay for.
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