Yes, it's a Mini heater. Don't need anything more fancy than that. I thought the original heater was far too big and it didn't really fit under the bonnet properly. Also, it was a nightmare to fit and with all the problems I've been having it would have been in and out like something I shouldn't really mention on a public forum
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I did use part of the old heater as a duct for the windscreen vents and that's what the black plastic tubing you can see in the top picture is for. It looks ugly now but it will be covered up by some sort of Heath-Robinson dashboard construction when I've given it more thought and come up with a way to do it. The interior is evolving rather than being built to a plan. Sometimes I'll just wake up and have thought of something, like the aluminium floor panel. That just came out of the blue.
As for the BMW side repeaters, it was AlanD that gave them to me, along with some headlights (I used the driving lamps from them as extra driving lamps on the Rat). What happened to Alan anyway? Anyone know?