lemans how would the eismann race sound on a 4.4 and also would i pass emisson tests?

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2012 X6 ///M Sapphire Black/Black Pref Full Leather
2007 Alpina B7 - Alpina Blue II/Creme SOLD
2004 X5 4.4i - Toledo Blue/Grey SOLD
1994 300ZX TT - Black/Black