Yes, the ART pipes perform better than open test pipes and are much quieter. You will see gains and it will be quieter.

It's a custom dual exhaust that was installed and bent by a shop where I live. They don't make dual exhaust for 03-06 so I had to have it made.

Hi,
Thank you very much. You will need to get a double din conversion kit. There are a couple on the market but the JDM Nissan one from Japan is by far the best quality. This will replace your main dash part along with the AC/heater controls. Give the guys at EverythingG35 a call and they can help you out.