I did my whole exhaust on my 02 outback wagon similarly to the guy above me. Borla UEL headers, a single cat, 2.75" pipe and a magnaflow streets series muffler. I actually noticed some performance gains in terms of a widened power band, and it just ran better overall. The noise is great, and although it could be considered 'droning' at speed it doesn't bother me. FYI it did throw a CEL recently due to the increased flow, but I turned it off and it was no biggie. Good luck!