[jspdr]

Hello all,
New to this forum, and i have a couple questions:

1- can i install f10 M5 rear diffuser to my 535i M sport rear bumper?
2- what is the cost effective way to convert 535 single exhaust tip to m5 quad tips? I 'd like to stay with oem parts. Is it possible, or have any one modified the exhaust tips instead of changing the whole mufflers. Any suggestions is appreciated.