The Driveshaft Shop Stage 2 Rear Axles for the 2003-2006 Nissan 350z uses a special chromoly outer c.v. that is much stronger than the factory one. They are attached to a 4340 chromoly bar which is just what any street/track car would need. The center bars are more torsional and will handle what your foot can put out. The inner c.v. is re-used on this system, just simply remove the inner c.v. from the factory axle and install it on this set. The kit comes complete with both axles including boots clamps and grease for the inner swap.
These are good for up to 500 Hp
Price is for both axles