I was a bit worried to see it fitted this way. Did they say this was the only way to make it work? It's cool on other cars with round bumper cutouts though (Evo, skyline, supra, etc). The sound is good, but to know for sure you need fly-by's, in-cabin driving, and a few launches. The stock exhaust sounds amazing with the camera right by it, yet you hear nothing in the cabin with windows up. If you don't mind making a few more clips, it would be interesting to see.
Anyway, if anyone is still tempted to get this muffler, here is what I'd do: ask your shop to paint the muffler & piping matte black to conceal it more (leave the tip shiny), I did that before, it looked sick but with titanium tips. Have the shop cut and reweld the tip to a pipe with a bend that is the same diameter so it looks straight on the car since the muffler can only fit at that angle. You could technically mount the muffler even more inside the car to make this work. But even then it still needs a round bumper cutout to look perfect. That's up to each person though what's acceptable looks-wise.