I just got one on Monday too. 2014 Silverado 1500 Crew 4x4 with the 5.3 and the trailering package. I opted for the Forest Green Metallic paint which is awesome and the pics don't do it justice. I also got the Cocoa Dune interior instead of black. Which did you guys get? No mods yet but I want to get running boards (wife too short to get in easy) and a tonneau (keep stuff dry) just to make it functional for my family's needs.
As for v4 mode and exhaust, It only goes in to v4 mode when you are not giving it a lot of gas and its only while moving so I doubt you will hear much of any exhaust note change. I can't tell a difference with the stock exhaust.
Pics of mine.
