Originally Posted by SS_Firehawk

A turbo 4 in a Z just sounds like a bad idea. No one wants it. People who don't own a current or previous Z won't want it, and guys in Mustangs and Camaro's won't trade for it. The fight for efficiency ends when Marketing tells the the boss, no one will buy it, the Boss will tell the engineers to do what Marketing says. Stick with the 6. Last time I checked, people driving fast cars don't need revolutionary fuel economy, just enough to get past regs.