Got the 140400 Borla Touring exhaust on our '13 SE. Installation was not a big deal, it is easy to line stuff up and get lots of clearance in the tight spots. We've had it on the car for about a year. In fact, I just installed Cobb poly hangers a couple of weeks ago. Trust me, if you're going to put poly hangers on, do it during the exhaust install, lol.
The exhaust fits like a glove (as one would expect a Borla exhaust to fit) and it sounds fantastic through the RPM range. It is pretty deep (for a 4-cylinder engine), has a nice tone at idle, and produces no drone. FWIW, it weighs a few pounds less than the stock exhaust, too.
I used a chain exhaust tubing cutter but a Saws-all or a grinder will make quick work of the old exhaust.
Borla provides good installation instructions (including removal instructions for the stock exhaust).
It's a top-notch exhaust system.
Given the shipping costs, what about a local muffler shop making a custom exhaust?
Snorkel delete, K&N filter; FSWerks RMM insert, JBR rear sway bar, 63 mm throttlebody, MST intake tube, Borla Touring cat-back, FocusPower tune.