Chelle,
A friend of mine (Wayne at Motion Products) has a Ferrari restoration shop up here in Wisconsin a few hours north of you. He has had a few GTO's in his shop. He built one GTO totally out of aluminum for a retired doctor in Illinois based on a different chassis. He has been racing that car in Vintage racing. He is ill now and understand it is for sale last I heard.
Wayne recently completed this GTO built completely from scratch. It is owned by a guy in Madison, WI. You may know Wayne already. He would be a good source for anything GTO. His labor costs though not cheap is probably better than down by you.