I have a 07 Supercharged which has the screens in the headrests, whether this makes a difference I'm not sure but the measurements are 136mm between the poles and 162mm from the outside of each pole.
It is, had a 4.4 V8 which I thought was great, the Supercharged is miles better. The changes they made to the suspension, gearbox and interior have transformed it into the car it should have been.