That's a neat addition and it doesn't take up space in the cabin. I suppose you couldn't fit this to a Cooper or Cooper S as they'd have the servo over there.
It's also a lot cheaper than the other heaters (especially the Cooper S heaters) which is nice, there is also no wiring needed.
I'm assuming that that's a 'unique to Australia' item? It's pretty cool - nice buy.
Yes, I think Australian only. The heater core has an Aussie part number stamped in it so it's been designed/made locally. They were fitted to all automatic cars to improve the cooling
The simple (or crude) construction means that the side plate is held in with 4 screws. The heater core seems to be held in place with foam tape (which had totally disintegrated by now) which meant the core was a little loose
Unfortunately one of the screws has worn through the top corner of the core so it'll need a little repair.