You all realize with this M5 Limited package, at least in Canada, you are saving $16420 - so they are giving the M performance exhaust (and more) for FREE essentially. Negotiate the 5-7% discount on top, it is a great deal on a loaded M5, way better price than in Japan for the Nighthawk edition.
BMW M5 Santorini Blue II
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Audi S4 Solar Orange