Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#8
11-14-2005, 03:08 PM
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Re: 1970 COPO Z28?
You are right! GM drilled the holes to a specification assigned by a print. There was an early print and a later print. The tooling was also revised so the part numbers for the spoiler will show revision # on them.
The best documentation is the original owner  https://www.yenko.net/ubbthreads/show.../page/2#138884 Phil 
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