I haven’t looked under to many Minis so I’m not sure if this is the muffler that came on the car.
It doesn’t look like RealOem

Sorry I can’t post pictures…yet.

It has a Mini logo stamped on it with this #.
18107521422-01

I’ve looked on RealOem and can’t find this #.

When I google I get a few hits.
Here's one
[FONT=Times New Roman][SIZE=3]http://www.ebay.co.uk/itm/new-mini-spare-parts-/250861873050[/SIZE][/FONT]

This is the muffler I have on a USA 05 MCS automatic.

Thanks
ab