I have the exact same truck, a 2000 that I ordered from the factory with a 454, 4x4 and an automatic. Loved it. Still have it but it needs some work so its been temporarily sidelined, with 300,000 km on it. Some of you may have noticed I'm now using a 2001 diesel Ford F350 with the same layout: crewcab, long box, 4x4.
The 454 is a better match to the truck than the 350. I've had just about the same issues as KZ: front brakes wear out quickly, intake manifold gasket had to be changed. I also had to replace the rear brake lines because of excessive rust. The front lines need changing, too. I've read on the 'net its a common problem with GM pickups of this era so you might check yours.
It'll pass everything but a gas station. If you notice it becoming hard starting and real hard on gas, change out the injectors... It also has some programming in the engine computer that limits it to 100mph...
Rides 'way nicer than the Ford. It'll handle whatever you cram into it...just make sure you got real good tires because they seem to be the limiting factor once the load puts the frame onto the rubber axle bumpers.
You'll also be learning this song: "give me 40 acres and I'll turn this rig around..." It's a big girl.
Jon.
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