I don't know; I would have to go pull the sheets. They were the V8 that comes with the Z71 package --- albeit the Z71 package w/out the fancy graphics (e.g., skid plate, etc.)
5.3 sounds right.
They were an OK vehicle --- just had stupid things that would break --- door locks, A/C, whatever --- but they consistently had goofy issues that would keep a few in the shop at any one time.
The seats were a big complaints. Roughnecks are not small men, in general, and the seats sagged and looked/felt like hell in 3 months.
I have to agree on that, the seats in my friend's 2000 Silverado (fully loaded) were absolutely awful, and he wasn't using it for anything but commuting and light hauling.
Rumor has it that when Nissan went shopping for parts and designers for the Titan (since most of the major parts are made by the big 'names' like Bosch for the brakes, Rancho for the shocks, and Dana for the axles), they got Recaro to whip up a range of seat designs for the Titan. I tend to believe those rumors, as even the base seats in the Titan are extraordinarily comfortable.