I just spoke to a gentleman in San Francisco who says his 1991 Imperial limousine seats 5 in the rear in a couch-type arrangement. I asked him if this was a custom coachworks job and he said he was not sure since he purchased the car second hand. In any case, this seems to be a rare find. I have asked him to provide the VIN. The owner gave me permission to notify the club. His telephone number is 415 987-5466. Here is the link to his ad on craigslist http://www.craigslist.org/sfc/car/32967511.html