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Old 12-27-2009, 12:19 PM   #17
Matt Monson
Scooby Guru
Member#: 832
Join Date: Jan 2000
Chapter/Region: RMIC
Location: Teh Ghetto Garage, CO
99 2.5RS, '85 911
'73 914 and 2012 BRZ


A 304 SS header for these cars is a waste of money. The reason I say this is because when Cobb made theirs they did a lot of testing and found the thermal (heat retention) values of the mild steel were superior to stainless. Even though stainless has this reputation for being more durable and prettier it's not the best performer. It will be easier for you to hit a lower price point with mild steel, which will also give better performance than an identical design out of 304 SS.
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