If this is the one at Old Kingsbury “Roger Freeman’s”, the fuselage is from an RR engined F2b, not from a Marshall & son’s built F2b. From the photo’s I have seen of the WotG fuselages, when they were in situ, forming the roof framework, they would all appear to be RR engined, not Sunbeam or Hispano engined.

There was a very rotten fuselage etc, from a Marshall built example, that was found in Lincolnshire. I believe this is one that ended up in the hands of the late Neville Franklin, along with many other F2b parts, including an ex WotG fuselage. I may be wrong, but this is probably where the instrument panel originated from.
Bob T.