Like people have already said: Borla is NO larger than the stock SVT exhaust (except for the rear section - but that makes no difference as the main pipe is still too small), and it's stupid expensive for what it is.
The Trubenz is a better buy. I would reccommend a resonated Trubenz system with a Magnaflow muffer/s AND different tips to the regular slash cut "redneck-style" tips they come with.
What'll you get is a quality exhaust system that sounds great and flows great too.