I'm an expert on 350Z's. Trust me you don't wanna go turbo, the most typical modification for these cars is to ditch the V6. See the Z's V6 is historically known for being weak and inefficient, not good for kids who have very wealthy parents or in the absence of the aforementioned, very big imaginations. What you want to do is go with the small block from a Mini. They handle boost incredibly well, especially from XSTurbo turbos. The also swap right into where the Z's V6 used to sit with no modification.

For an exhaust you're going to want to go with stacks, since they offer the least back pressure for the turbo, since they vent higher in the atmosphere (less pressure). You'll also want to swap in a Mk. I Beetle 3 speed since the tall gears make for better 1/4 mile times and better highway acceleration. It fits right in where the Nissan's 6 speed used to be.

To lay all that power down you'll want to change the Z's sophisticated suspension out with leaf springs, a proven design. For wheels, at least 20" is recommended and chrome is mandatory. The extra unsprung weight will be compensated by your wheel's greater radius. Spinners will also increase your car's inertia to allow it to do 200mph+

You'll definitely want A-pillar gauges for a narrowband air fuel meter and turn signal fluid pressure meter. Also you'll want to buy an outboard tach with a shift light so you know when you hit VTEC, so you don't blow your engine from excess horsepower.

Z's also have a habit of blowing their muffler bearings so you'll wanna check on them every once in a while, especially when you're running a boosted small block with VW transmission, it tends to overpower the stock exhaust bearings.