Spoke to Nissan rep at Philly car show

Originally Posted by ZYGOTE

Simple fact is, the 370 shouldn't be competing with the likes of the V6 Mustangs and Camaros, their competition is the V8 counterparts, which both meet or exceed the Z's performance. Also, there are other cars in our rear view mirror, such as the Genesis Coupe, that are rumored to be getting huge power bumps in the near future. Nissan has to act quickly.

Also, the Z went from 287hp in 2003 and ended at 306hp in 2008. However the changes were much deeper than that, as the HR engines were far superior to the DE engines that the 2003's came with.