I was looking on the nissanusa.com website and the only thing i noticed was the 300hp on the track model. I know for 04 they added a additonal 12v adapter and seat belt tentioner and also something diffrent with the interior mirrors. I wonder for 05 whats the little gadgets and add ons they modded. I wish they would make a better sounds system for people that done have Bose, i always hope that they come out with a few new colors and interor colors. Know anything about the 05 Z post a reply