I have just bought a 2014 XKR 5.0 ltr and it has a 6 speed box and it also goes like stink. I also have a RangeRover Sport Firenze red 2013 3.0 lt and a Porsche 911 996 1999 Carrera 2 and the KXR is way faster than the porsche.
Driving dow to Spain in it come July and looking forward to it
Peter Hopper