Fluffdaddy

I am thinking about putting the M kit on my car for next summer, and i was wondering if anyone out there has taken their 535 exhaust and swapped it to the quad pipes like the m5 or even just put an m5 exhaust on?? If so how difficult is it to do, and what is the best way to go about it?
Thanks for your help and advice!!

Ojo_Verde

It has been done countless times, people only have issue with xi from my understanding. There are s few threads on here of people who have installed a quad exhaust on their 535i just search for it. My only concern is the battery being right next to one of the outlets causing the battery to heat up.