Dedicated to the Promotion and Preservation of American Muscle Cars, Dealer built Supercars and COPO cars. |
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#1
08-17-2007, 12:42 AM
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Re: water neck 660
Observation: The 660's with the number on the neck has the triangle cast with the letters ADC inside the triangle and the 660's with the numbers on the base has a diamond cast with the letter P inside located in the recessed area near small hole.
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