I have seen a few pictures of quad exhaust but most are too close and sit too low on the car. I found a site that makes a bumper for quad exhaust that sits really nicely on the G35!

http://www.raceonusa.com/infiniti-g3...2-door-p-27714

Does any body know who makes an exhaust system or even a better bumper?

 

ive never seen anything.

it will be hard to pull of IMO. GTR tips would look good on that and thats about it.

 

I like the look. I havn't found any Quad Exhaust set ups for sale though. Seems like there all custom made.

 

Since it is custom you can tell the muffler shop how far apart you want the tips.