Double swivel seat

A few pics of a concept I was working on, a double seat from a VW T5 with an added swivel, does have room to turn 180 degrees.
But the seat is rather narrow and not the comfiest, and compromises my new design too much, so won't be using it normally, but may keep it for use when an additional passenger is required.
Seat is bolted down for travelling and a couple of eye bolts are undone to allow it to swivel on site.
Unfortunately there aren't any decent photo's and it's now jammed into the shed....
 But here's a picture from the rear.

and a bad picture of the framework.

Not to be bothered about selling it, but would swap for a standard double seat from a Relay, Ducato or Boxer (2002-06 models)