Why take the chance on a BB oval tip? When we can just buy the Milltek tip or full cat back for the same money? If you like the twin tip then buy BB or MTM. If you want single then Milltek is excellent.
Watch this vid from 1:43....that sounds nothing like a stock SE exhaust. IMHO
If I can get my car running properly again- new seals for the MAF sensors going in tomorrow, keeping good thoughts- I'll try to get a quick video of the sound with my gorgeous quad tip polished BB/APR exhaust ;-)...