William is correct regarding the later NOS with exaggerated wrinkle on both ends on top rail. I also believe later NOS lacked the AC provision/holes on the top rail. Perhaps only on later NOS ones.
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Steve Shauger
The Supercar Registry
www.yenko.net
Vintage Certification™ , Providing Recognition to Unrestored Muscle Cars. Website:
www.vintagecertification.com
Last edited by Steve Shauger; 03-23-2020 at 03:06 PM.
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