Just installed my Q300 on my 2008 G35 sedan. Love the sound. Not raspy at all. Hwy driving has minimal drone. Got my friend to do a fly by on me and it sounds sick. I would recommend this exhaust to those who want a louder and deeper stock note. Sounds very classy and doesn't sound like a cheap after market exhaust at all. Also noticed hp gains.

 

Those are quality setups, glad you're liking it. If you want a more subtle look from the back here's a DIY thread I put together
http://www.myg37.com/forums/d-i-y-in...-blackout.html
To see that DIY on an Invidia Q300 here's a shot from Soundmikes Sedan
http://www.myg37.com/forums/3658667-post53.html