Good question - I do want to have a quad exhaust on the back and its not so easy with the M sport bumper (I actually like it more than the M)

I purchased 4 3.5" dimisa tips and am trying to figure out how to make that work - I think I will need to cut them much shorter (lengthwise) in order to glue them onto the existing exhaust.

So for now I am going to try to use the same bumper but frankenweld two tips per side.