There were at total of 22 Disco II's built for the '03 Challenge that were brought into the US. They were all 2003 model year vehicles. The 5 speed tranny is unique even for an '04 model. If this Disco is an '04, there is a high probability that it is 1 of the 200 LE vehicles sold by the dealers. I own the number 78 vehicle from the '03 challenge and she was used in NY as a media vehicle and in Moab as a competitor vehicle. I have done a fair amount of research on these vehicles and have found two unique characteristics among the event vehicles. The first is that the roof was not stamped for the OEM roof rails. This allowed the fitting of the SD low profile roof rack with no holes to plug. The second was the addition of a fairly large relay box that was fitted in the battery compartment between the battery and the bottle jack. This relay is the main source of power for the 6 WARN SDB 160 lamps. Every other item that was fitted to the G4 event Disco's would have been commercially available via LR, Mantec, WARN, etc.