Question on changing OEM muffler to Borla Turbo XL?

[bitl]

Hi all,

I'm in a need to replace my factory muffler ASAP on 2011 x6 3.0. All the upgrade options are pretty expensive out there.
Until I found this.
http://www.borla.com/products/produc...?cat=2&type=80

This muffler come in center to dual flow mod. What inlet & outlet diameter would I need to use?
Do you think this would work?
Any suggestions?

Thanks

Al