Hi there. Really love the setup that you have on the car. By far my favorite sounding M5 out there hands down. Want to do a muffler delete with some Magnaflow resonators with my SS Xpipe but I dont think its going to sound similar to your car. Would like to see if the shop that you had your setup fabricated at would like to mock up an identical system like your to sell? Just really like the sound; never hurts to ask. If you could get back to me thatd be really great! Thanks.