On Ebay this seller is selling a GT-R diagnostic kit. This kit is normally only available to Nissan dealers. This is only part of what is required for a complete Consult III to be able to run diagnostics and testing on the Nissan GT-R. This card will let you get into the TCM to perform clutch adjustment, something that is required after any transmission work. In addition to this kit, you also need the Panasonic Toughbook either a CF-18 or CF-19, and you need the Consult III software, and hardware. This part of the kit is very difficult to get, and the price is reasonable.
Update : Sold Already. Maybe someone saw it here ?