Pics can be found here:
http://www.supersprint.com/a_prodott...ello=bmwE92m31
In order to pass U.S. smog regulations (For states that require smog inspection such as Texas), you have to have a set of cats. So my question is, how does the o2 bungs get connected to the front pipes w/cats (part #'s 980722 & 980702) if there are no o2 holes on those cats? I'm assuming those front pipes weren't designed w/the U.S. in mind so they'll make another version for the U.S.?
The U.S. distributor for Supersprint is in Tyler, Tx which is 2-hours away from me. So I might be drive there to checkout all the e92 M3 parts & possibly buy:
http://www.supersprintna.com/
Slightly OT: I had both the GruppeM titanium & Supersprint race mufflers on my old e46 M3. While the GruppeM was much lighter & sounds good, I preferred the Supersprint race due to its deeper growl.