Hey guys, I am speaking for a friend of mine who is looking to get a set of straight exhaust pipes without the use of catalytic converters or mufflers. He has an 06 G35 coupe bone stock. And I have told him about other options to tweak the sound of his exhaust but he is dead set on straight pipes. I guess he heard a G with them and loved the sound.

So I am just trying to see what options he would have when it comes to doing this. Does it have to be custom fabricated? Or do any companies make a bolt on kit?