Exhaust TECH Mufflers, Headers and Pipes Issues

          
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Old 05-01-2005, 07:28 PM
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These were on my 79 TA (W72 400) when I got it. The casting #'s are 9777642 and 9777646. According to the R.A.R.E website, these are original casting #'s for Ram Air manifolds. What can you guys tell me about these? Thanks.

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Old 05-01-2005, 07:28 PM
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These were on my 79 TA (W72 400) when I got it. The casting #'s are 9777642 and 9777646. According to the R.A.R.E website, these are original casting #'s for Ram Air manifolds. What can you guys tell me about these? Thanks.

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Old 05-01-2005, 07:56 PM
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1967 GTO Ram Air exhaust manifolds.
Also will fit the 70-79 Firebirds.

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Old 05-02-2005, 04:41 AM
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Should I modify these in any way?

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