Your Nissan 350z need an aftermarket radio for better sound. I would advise you to add a XO Vision XOD1730 Double Din 6.5 Inch Touch Screen Multimedia Receiver to your 350z. It also depends on how much better bass sound you think would sound great for your Nissan 350z. The XO Vision XO D1730 Double Din 6.5 Inch Touch Screen Multimedia Receiver has a large 6.5" motorized touch screen.  It includes a TV tuner with an antenna, Zpodlink for iPod connections to the car stereo, digital album viewer, AM/FM radio, DVD player, remote control, input for a backup camera, and a variety of other features.  XO Vision XO D1730 Double Din 6.5 Inch Touch Screen Multimedia Receiver is able to play burned DVDs as well as watch TV while on the go.  

The XO Vision XO D1730 remote control makes it easy for passengers to control the system themselves without having to distract the driver. To top it all off this XO Vision XO D1730 unit comes complete with a TV Tuner and antenna so watching terrestrial TV shows is as easy as listening to the radio. The TV Tuner is a must for any sports tailgate party; catch the scores and early or late games without leaving the parking lot. Back Up Camera Capability Backup Camera Input (HTC31/32 Sold Separately). You can set up the Back up Camera to power activate on the brake or reverse lights. While you are in reverse the rear view camera image will be displayed. A unit with additional review camera adds safety and allows you to maneuver in tight spaces with ease. So forget those thoughts of having a factory radio with bad sound quality in your 350z and take a look at the XO Vision XOD1730 Double Din 6.5 Inch Touch Screen Multimedia Receiver today.