my vote is on a muffler shop to do it custom.. it’s really just my opinion, and borla is a great system, but to me aluminized steel sounds so much better.. people will say it rusts and all that noise but it’s just as good as the stock pipes.. and it costs so much less to have an exhaust made to your specs.. i got full 3” cat back.. i’m not saying it’s all about cost and whatnot, but when you really think about it, you’re paying a company like borla a lot of money for small piping and a brand name.. again, that’s just my opinion.. and you can really customize the sound rather than accepting whatever the big name company offers.. like just a resonator and no mufflers.. and so on.. just my 2 cents