Very interesting info, thanks for sharing! Looking at the previous photo I couldn't see the spares, and I was wondering why the rear seat on a rally car.If anyone is looking at this image of the Mini Cooper rally, you can probably make out that the two parts of the rear seat are lying against the rear bulkhead.
Not only was this a very clever way of complying with the regulations of the time, in that all seats had to be in place to qualify as a production vehicle, but a way of allowing two spare wheels to be carried inside.
In my mind and lack of knowledge about motor racing in general, I thought maybe the manufacturer (IXO?) was being cheap, so they used the interior of the road going Mini, thinking no one cares.
Also, nicely done seat belt mod, pretty neat!
I have a couple of the Tremonia seat belt kits waiting to be put to use, but I never get to it. I guess that's what they call "project fatigue": starting too many projects, losing focus, burning out and finishing none.