Went to my local muffler shop and had them do a muffler delete on my 17 Nismo.
It took them like 30 minutes and they even coated them with high temp black paint.
Very happy with it, especially for $100. I'll post a video and pics later.
Impressions: Everything is stock besides the muffler delete. Sound: It sounds really good at low RPM's, pretty deep. It's a lot louder than the factory HKS Nismo muffler but it does have a little bit of rasp. Don't mind it at all, since I like loud exhausts and well, I didn't buy a luxury car
Also installed an affordable Alpine android auto double din.