I'm sure they would fit in terms of space and size, but you would have to custom make some sub-frames for the seats to sit on.
I think the closest thing Nissan did to a bucket seat in the K10, was the seats they created for the K10 Super S. Arnold off here has Super S seats, this is the only pic I can find of them though:hmmm...
im just fed up with my interior, and i suffer with a bad back, so is there any bucket type seats as standerd in a micra, k10` s?
I haven't owned a micra long so don't know much about the availability of parts, but I seem to remember someone saying that they're difficult to get hold of. But a breakers yard is your best bet, or ebay, or in the buy and sell section on here.
I think the car is going v.cheap, so possibly buy the car for £50, swap the seats, sell the car? Not a great option, but a viable one if you can't find any other seats.