I'd imagine that the £5k Z51 pack will be standard on UK/Euro cars? Including:
Michelin® PS4 Performance 3 Season tires, Standard FE3 Performance Suspension, Available FE4 Suspension with Magnetic Ride Control™, Larger 345 mm front and 350 mm rear brake rotors, Extra cooling with additional rear-mounted third radiator, Electronic Limited-Slip Differential, Larger rear spoiler provides up to 400 lbs. of downforce, Performance exhaust results in 495 HP.