Thinking about a new set of wheels for my 09 LT1 . currently has the chrome facias that are held on by threading onto the lug nuts. The wheels I may buy have ha center cap that goes over top of the lugs. I do believe the center caps on the new wheels would not clear the existing lugs since they are longer because of the threds that the facias anchor to. Can anyone out there tell me what size nugs I will need to match up with the factory studs. Believe it or not the wheel dealers are very little help on this. I guess if I was buying wheels for a Honda or Toyota they would be up on these things.