Wow. All that I can say about this build.
This was from almost three years ago and this guy already made a MG Tallgeese I by modifying a 1/100 HG. Even if you are not interested in making a Tallgeese you should read through this guy's WIP because he employs many very good modifications. I know the pictures I linked to are not impressive looking but believe me his build process is incredible.
The modeler has not uploaded pictures of the completed model to the thread but regardless the build is awe-inspiring. There are much too many pictures for me to link but I highly recomend reading his WIP here.