[camarojoe]

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...if these are exact and I mean exactly like the originals and even the most critical eye can't tell the difference then what happens to the value

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If they are, they'd be the first repro part I can think of that a trained eye can't tell from original. Another factor would be the number produced, and the price... My guess would be these would still be made in very small quantities, and priced nearly as high as originals... no one's going to go through the hassle of reproducing them to give them away. I still say original parts will always be original parts and the guys paying the big money are doing so BECAUSE they are original GM parts. IMO the value of these parts will never be harmed by reproduction pieces, copies, or fakes.