[cdb95z28]

In order to beat the ZLE at the 'Ring, Ford had to turn the S650 chassis into a racecar....cool car but it's a heavily modified chassis, 6-7 years after the ZLE set its time. While the GTD starts life on the Mustang production line, Multimatic takes over and makes it a racecar. Oh, and they did most of the engineering too. The ZLE engineering was GM depth, save the DSSVs. Meanwhile the ZLE never saw anything other than the regular Alpha production line and those chassis (suspension) bits of the ZLE are easily interchangeable into any Gen6 variant. IOW, it took Ford to build a racecar to beat the street car ZLE.