There are Modders and then there are MODDERS, This guy is obviously the latter, He decided to work on a little project in which he took his Xbox 360 slim and PS3(fat) and decided there original housings were just not good enough and took out the internals and combined them in one case which looks like a fairly impressive set up. The Modder in question goes by the name timofiend. He has posted up all documentation of his project for all those who are interested in making there own, You can check that out through the source link.
This looks like a very practical way to save space and to make people simply go WOW. Check out the source link below for more pictures and info on making your own.
Source : Timofiend