I curently drive a 02 chev 1/2 ton 4x4 with an automaitc and a 5.3. We have a large pop-up camper and get about 15-16mpg pulling it. My question is if we upgrade to a camper like the one pictures how bad am i giong to drop my gas mileage? I really would like to upgrade but i don't want to get a camper so big that my truck gets 5-6MPG. With my budget that would pretty much render it usless to us. I was just wondering if any of you guys camp and have a similar truck and camper set-up that might be able to tell aprocimetly what i might be able to expect for MPG