Fascinating! I wonder if it is still around? Those rear seat conversions were terrific, so long as you had rear side windows in your van, otherwise it may have been a bit claustrophobic in there. I'd love to put a rear seat in my van but finding one nowadays in Oz would be very hard.

This is a van my grandfather did in the mid 60's. He was very good friends with the local BMC dealer and would collect cars from the factory and drive them back to the dealership. It's quite possible this was a brand new car modified before sale... Unfortunately I didn't find out about this mini (possibly there were more) until after he had passed, but it was great mum was able to find a couple of photos recently.

It's a smooth roof with sliding window so it must be an early car? From the front you can see the "woody" side panelling and chrome strips, and also the new rear seat.

A rear seat would not be hard to fabricate.. its just two slabs of ply, two rectangles of foam and vinyl covering and some simple gate hinges and sliding bolts.

If I was going to do one I would measure the hole rather than use the dimensions of a real set-up. The reason being that the hard part would be modifying the metal body work to allow the necessary room and making up brackets to support the backrest...

Cheers, Ian

A van or truck dual dickey seat would fit and include belt anchorages. I know because that's what I've done. Only thing is they're damm heavy.

In the interests of full disclosure etc blah blah the setup you are talking about should be engineered by law and would also require seat belts.

...(ie can you copy mounts from an estate van that had seat belts that comply)...