Is it possible to have dual displays (GS 1) in a 9660 combine running Harvest doc and Autotrac or do you have to bite the bullet and upgrade to a GS2. My dealer didn't think autotrac would run on dual displays..... we already have two GS 1 displays and mobile processors so if it was possible I thought we might give it a try. It's not an integrated autosteer either we have an original ATU I am going to use.