Posting should anyone be researching the same set up. I spent weeks online looking at pics and thought I'd share mine to help anyone else.
Truck - 2014 Z71 Silverado, stock 18" wheels
New gear: 2 inch rough country level on front - 275/70/18 Goodyear Duratracs (Stock 265/65/18) - New tires are 1.6 inches taller and .4 inches wider.
I wanted to move away from the factory rake and stock tires so it looks like a truck. No rubbing, drives great around town and highway. Love the feel and the look. Gas MPH has taken a slight hit but that is a given right? Shaved the mustache off (air dam) as well. Tires hum on the road but it is not loud. Hope this helps anyone else researching....if this belongs in another list...please let me know.