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X51 on a 997 - How can you tell?

J Holmes said:
Another visual check is to look at the exhaust manifolds. The X51 manifolds merge like the 996 ones for better flow whilst the standard ones are an ugly 3 into 1. Will post a pic if I can find one. On it's own that isn't conclusive as the manifolds are a retrofit for a standard car but if you have the carbon fibre airbox as well then the signs are good. Will also post a pic of the options sticker from my handbook - you can see the X51 code there.

Pics of manifolds on that X51 link above
 

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