Just thought I'd ask for some 2 cents on this. We have a 98 Tahoe with about 120k miles that's getting a bit old (drivetrain great, seats, body, little plastic things not so much). We bought it to tow a light trailer, but now we have a larger 18ft tent trailer - (2k empty/3500lbs max) and that plus the kids, gear etc - it's still great for local camping, but we are planning on some longer trips, so I was thinking of getting something newer/fresher and with a longer wheelbase. The catch is I don't want to spend too much as we don't use the truck that often. I was looking at at 2006 Crew Cab GMT800 Sierra with the 4.8, and a Crew Cab 2010 2WD Sierra GMT900. Is it worth upgrading to a longer wheelbase GMT800 or GMT900 Suburban or Sierra/Silverado Crew Cab? Is the 4.8 good enough for our needs? I also was looking at a 2006 Ford F-150 with the 5.4 Triton, but I don't know Fords as well and I've read some less than rave reviews about that motor.