I am sure you can find some pics on some chevy forums regarding the looks. I have 01 f-350 that i did a 6" lift on and it recommends 37's with the lift. I went with 17" rims and 37 BFG's and would almost like another 1-2" of tire under it. They fit on mine no problem. If you go to Rough Country's website they recommend what size tire to run with your lift. As for the rim size that is your call. You may want to price a set of 37x20 as they are in the neighborhood of 450.00 per tire. I personally do not care for the little skinny sidewall on a jacked up 4x4.Like i said find a chevy 4x4 forum and look around at others ride to get a feel for what you want then check on prices. I have found some bargains on the site i am a member on , and really enjoy seeing what others are doing to theirs.