Well the ex lightweight world chapion paul Spaddafora lives in pittsburgh so see if you can hunt down his gym.
Spaddy should have lost to dorin, but he is still undeafted. I am sure he could teach you a bit.
Hey leejunfan,
I assume you are joking with the comment about lil Bruce having the best body??
He certainly isn't the most ripped either. Here is a photo of an Aussie boxer L Ndou. This is lean for a boxer but there are quite a few fighters like this...