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Old 10-08-2017, 11:04 PM   #9
71sierragrande
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Join Date: Dec 2010
Location: San Diego, California
Posts: 928
Re: Question for the purists

I wouldn't mess with the spid. I think it is supposed to represent what the truck had when it left the factory
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1971 GMC Sierra Grande 2WD 1/2 ton, 350/400 auto
2008 Chevy Silverado 2WD 1/2 ton LT1 5.3L auto
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