There was a shop in Lakeland called "Big Boys Toys" that widened wheels. Hell they made wheels from scratch at one point. I knew several guys that had them do them. I dont even know if BBT is still open. Theres a shop in Plant City called Taylor and Allens, they may know of a place if BBT is gone. Also try Chucks Trucks. They have a site too. Chuckstrucks.net They are in Orlando.
Matter of fact one of the guys that worked at BBT had a 4 door dually on 42s named GOLIATH. The name was fitting. LOL!