I bought that issue of GQ and of course they listed the maker of the suit. It's a Dolce & Gabana suit to the tune of $2100. Mr. T is appalled by that price and says it's the cut, not the designer, that is important to him. However, he is talking about visiting Armani to get a suit, so I'm not sure how that's any different!
I was glad to resolve the mystery. I wonder why the internet failed me so?