I'm also looking into Cal 35's. The original was produced from around 1979-1981. Anything after this is a mark II. The original had the
head just coming down the
companionway. The mark II has the
head just before the v-berth on the starboard side I think. At least two interiors were offered for the mark II. One had a pilot' berth aft and the other had a dedicated nav station and
storage under the
cockpit where the pilot's berth would be.
To quantify, yes any 1984 Cal 35 is a Mark II/MkII. They aren't labeled differently based on the
interior.
Hope this helps.