that is the nismo kit, very sort after but very rare, there is bits come up now and again on here, you probably wont find any on ebay, but yahoo auctions in japan will have some.
the arches are easy enough to get, AMY was selling them 200 a go, i believe the ones in the pic are Nismo arches, but there are Mulholland arches which are pretty much the same.
cheers i think thats cleared a lot up. im getting inheritance money soon so im lookin to drop some further mods onto the micra.
You have an idea or any pics of what the back bumper looks like??
Arches shouldnt be a problem seen as i had the arches done on my previous car fiesta mk3 which was sweet until i wrote it off :/ and got the beauty micra