You can purchase just the muffler from Magnaflow ! I've seen alot of folks here in the States go with the 12158 Magnaflow muffler including myself (this is not a catback system)
I installed the Magnaflow ($76 US dollars) with Borla performance tips. Some have utilized the stock tips. I decided to go the different route.
Check out my picture gallery.

Good luck on your quest !