It's a V12 AMG engine with twin scrolls on it by the way
I'm trying to find the video I saw of the exhaust creations, mad the ammount of time they put in to change the sound, two mufflers that aren't mufflers at all, connected to 2 pipes on each muffler making 4 pipes to the end with a flute slit in them to make something technicial with the air... it's an amazing creation they did, shame they don't have more details on it.
I'll just go cutouts and make it loud as hell, maybe that'll help