Originally Posted by Arnold K.

The 370Z is not lighter than the 350Z. Nissan claimed it was, but every magazine that has weighed them have noted they actually weigh the same as the 06-08 350Zs, and more than 03-05 350Zs. Pre-production 370Zs weighed a little less, but then additional safety equipment was added to the final product which added weight.

Anyways, all 07-08 350Zs (also 09 Convertibles) had the new VQ35HR motor, which is essentially the motor our VQ37HR is based on - just with less displacement and a few minor internal differences. Power differences between 350Zs were: 287HP > 300HP > 306HP. So our 370Z has anywhere between 26-45HP more. 370Zs also have a carbon fiber driveshaft, which reduces unsprung weight considerably for much better acceleration.

Then you simply look at the interiors - the 350Zs best interior with navi still looks like it was made from a bin of plastics used to make legos. Where as the 370Zs best interior looks and feels absolutely wonderful all around. Headlights, taillights, every single body panel, suspension, etc. are all different - the cars share practically nothing expect for the 6-speed transmission.