I've got a 2001 1500 HD Chevy LS with the Vortec 6.0 liter engine. It's only got 5,000 miles so it is still new but I have been very pleased with it so far. I do some towing of a good sized trailer fully loaded and the truck doesn't even know it is there. Strong truck if you do hauling and towing. Only downside is that is seems pretty thirsty (13 mpg), more so than my 2000 Silverado with the 5.3 was.......

Overall I am pleased, but the 81 300D is still the better value!

Jim