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631 hits | 52.58 KB | Posted: 10/30/07
Stock E7 exhaust port

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1107 hits | 48.96 KB | Posted: 10/30/07
E7 exhaust port with smog bump ground down

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798 hits | 46.23 KB | Posted: 10/30/07
F3ZE (GT-40 Iron) exhaust port with funny indentation where smog bump would have been.