Roland - Yes. Actually - a AH6000. But should be the same. However, the control head and the computer and the fluxgate and the helm position transducer all have to match/mate. But I was successful in getting all those to work with the existing (circa 1980ish) linear type 2 steering ram.
Nice boat the Whitby 42 ... looked at several, but none were around here when I was ready to buy.