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Old 07-30-2010, 09:52 PM   #3
StangKiller-SS

 
Drives: GM products
Join Date: Apr 2009
Location: USA
Posts: 1,621
Probably was an aftermarket kit. There shouldn't have been any variations from the factory. The RS gauge pack doesn't make it a 2SS compared to a 1SS. Either can have a gauge pack, or no gauge pack.
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