Tufy doesn't have stuff here. I'ld be somewhat surprised if he was even a member here. And his stuff isn't up for download.(at least not until after CaQT is released) You can look for him at WCC though. You can ask him how he did it, but don't expect him to give you models. Sorry if that sounded a bit harsh, but that's how it is. But did you try Google-ing it?
Its possible. Excedenly possible. People have made program that allow the earlier WoW models to be converted into a format suitable for use in 3DS Max, then those models are exported as WC3 ones with the Art Tools
Tufy did do most of his models himself(or with someone elses help) but he does use alot of stuff from WoW. It's easy to tell just by looking at it them(the models) that it's WoW quality. He even gives credit to WoW in some of his models. So yeah, he exported stuff, but I'm just as curious how he did as anyone else here.