Hi I see your dilemma.
I work on these systems all the time, but in this case there is more than 1 available display, depending on features you would like on your system.
The best thing to do is contact Raymarine at the # ***** have listed below to get this accurately they also can show you the links to the displays that will work on your system whether you use analog or digital;-)
Personally I prefer digital myself, more accurate but a little less detail.
They also have a tech support forum here: http://www.raymarine.com/view/?id=773
US Support Tel:(###) ###-####/p>
Our telephone support center is open Monday through Friday, 8:15 AM to 5:00 PM Eastern time.
In any case, I will stick with you until this is complete.
Please rate kindly thus far, it won't cost you anything to rate my service to you kindly,
Then you can reach me by simply replying to this message anytime.
Thank you and have a wonderful day!