I have a collection of 4x4 Sierra's .... a dedicated twin turbo XR4x4 track car for track days, another XR4 which I am in the (long) process of building a 4.0 twin turbo engine for and a single turbo 2.8 4x4 Sierra Estate which I used at Silverstone recently in the wet as the track car broke so I had to resort to the tow car
It was very amusing powersliding the estate round the corners
http://www.area51.org.uk/projectcar/images/td20/006.jpg