No the Mark VIII has the DOHC 4.6 Cobra motor. To be more accurate, Ford put the Cobra motor in the Mark VIII first and then later put it in the Mustang Cobra. The only difference between the Mark VIII motor and the Mustang Cobra motor is one of the cams is different, and the intake manifold is different. Everything else is the same.

Most guys with Mark VIII's try to get ahold of the Cobra intake manifold because it is a direct bolt on and nets a good 10rwhp.

This car is the ultimate sleeper because most have no clue it has a Cobra motor