I think ALL mustangs are classics in the eyes of Mustang owners and lovers. But in the eyes of the general public, and me personally, i think the 64-73 models are classics, but anything else, i'm not convinced.
The new one though, it doesnt happen often, but i think we are looking at a future classic. Everything about it works, there are a couple of things that worked better on the concept, but for a production car, i'm sold on it and i want one. And thats coming from a man who said he'd never buy a new car and rarely gets excited by modern cars, particularly current mustangs.
Everytime i look at my 68 GT fastback my mouth waters and i know the 05 model would do the same. I'm going to get one, thats all there is to it.