Originally Posted by DarkJak

The car stock begs for a better exhaust note. Not necessarily that much louder, but just a better tone, as the stock tone is pretty unrefined sounding.

Other than that, I think the mods are very dependent on what you use the car for. Driving hard? Springs/coilovers, brake upgrades, and an oil cooler are all necessary.

I think the Z is a great car to mod since it already has a lot of character, so it's easy to justify molding that to how you like it.