Hello, I ordered a G500 with the sports exhaust system, but wanted to retrofit the AMG performance exhaust system anyway (by Schawe). My question is now whether the sports exhaust system (which cost around €550 extra charge) is unnecessary, since everything comes out anyway, or this still fulfills a sense ? If this should no longer fulfill any sense, since this is completely expanded, I ask myself whether you can sell the sports exhaust system more expensive than the normal and thus you should still keep the sports exhaust system when ordering or whether you can save the 550€ and should rather cancel it.