Headers exhaust converter for Dbl Cab Long bed 08

So what is the best for the buck. I'm looking at either a full system of peicing one together. Headers and converter from Pase setter with a borla muffler and keeping my original pipe. This looks to get the performance I want at a price I can afford. The full systems look better and might sound better? Performance and sound go farther in my book then looks. Any thoughts? thanks