Truck looks awesome. I would agree with your comment about the aggressive tread as I have 275/60/20 in just Michelins and they do not rub at all with a 2" lift.
Let us know how it does. My Bakflip is about 90% water tight. I actually think it is the way the bed is as opposed to the cover but it does not stay fully dry ( pouring, car wash ) etc
Yeah, I got a coupon in the mail that they would change my cabin air filter for $55 bucks. I figured I could do it for way less so ordered my floor mats and filter from dealer. The filter alone was $39.95. Live and learn I suppose.