Just for the record why cant you pro-tour a X33 or X77 Z? I took a Numbers matching RS/SS convertible and pro toured it. I know this is off subject but hell buy a Z, mini tub it, go tubular on the control arms, coil overs, 4 wheel brakes. Z and go LSx, point is buy what you want and do what you want, I did and I know others who have. As far as a re-body that's a tougher call. I have seen cars where every piece of metal has been worked or replaced, change a dash out from rust are they still original?? I don't think so but they are what they started as say X11,22,33,44,66,77 so as long as your not making something its not than if its to save a classic go for it. What makes a Z is the engine, suspension/drivetrain without those who cares what the badges are or trim tags. You can restore the car all you want but with out the original drive train its just another Camaro that once was something say a Z or SS, etc. Anything you do replace those Z only parts well that's going to require restamping or telling its not original which is the truth. The only time that comes into play when you sell or buy or show. I hope this helps as thats my opinion and only that not that its worth much if you ask my wife
, anyway get what YOU want and do what YOU want who cares. I hear purists giving me crap all the time so I tell them its my car not theirs and unless they have x amount of dollars to buy it don't worry about it, at least its being driven and cared for the way it was built to be not hidden in a garage as someones bragging right that has no clue about it.