Source: Youtube / Godzilla Gao
You really have to give these (unknown) Japanese Godzilla fans alot of credit. Not only have they built an exact replica of the Godzilla suit from "Mothra vs Godzilla" (Godzilla vs The Thing) but they also run a very cool G site called "Godzilla Gao" and ink a very cool G themed manga (comic) called "Monster's Territory".
Wew! That's some real devotion to the "King of Monsters" there.
Now their website is all in Japanese so I really couldn't find out very much about them, but from what English text the group posted along with their latest video, which is great by the way, I gather that they have been working on their Godzilla suit for 11 years.
Well from the video it looks like it's completed and it looks really spot on to the one worn by Haruo Nakajima in the film. The group has also created a really cool King Ghidorah puppet for Big G to interact with.
My advice. Legendary Pictures outta give these guys a look up.
I'm just saying.
Here is the video, plus some older ones of the Godzilla suit being worked on:
Here are a couple of pages from "Monster's Territory":