I came across
this post on a Japanese blog. It's something of a comparison between the two types of KNT model kits that were produced, the Edomae Sets (which are the ones that were sold preassembled in Europe) and the Mega-Up kits. You can see that they're pretty much the same size, although the proportions and details differ slightly. The Edomae Set seems to have more articulation.
Featured at the bottom of the post is an example of the cute little drawings that the included booklets are apparently full of (someone, adam808 I think, previously scanned some of these). Pururun is saying "Kawaiku tsukutte ne!" ("Build me cute!") to which Yattarou is replying "Muri da na..." ("Impossible...").
