Peter,
I understand (as Greg indicates) that the wood on the roof is typical for an Aceca with a traditional “drop” type headliner. My Aceca (AEX521) has a traditional headliner and the wood frame, which I understand is there to support the headliner; although, I can’t comment on how it’s attached since I didn’t see mine being installed. I don’t believe Acecas with the glued on headlines have the wood frames. Maybe Greg or Gus can let us know if their cars have the wood frame and glued on headliner.
I used to think that only the early Aceca’s had the traditional “drop” headliners, but I’ve seen pictures of later cars with the “drop” headliners.
John