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Old 11-27-2011, 11:08 PM
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elcaminodragster elcaminodragster is offline
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73 firebird rear decode help

Hey everyone I need some help figuring out what kind of rear end my moms firebird has.

Here are the codes I have found...
GZC 178 1
N 1235542 B

I'd like to know if it's a 8.2 or 8.5 is it a BOP or a standard GM rear?
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