http://themeparkinvestigator.com/in-memoriam-kongfrontation/ On the article to the left it says
However, one persistent rumour indicated that Kong’s show building had become structurally unstable. To combat this, a new dark ride (Revenge of the Mummy) was installed, with extra supports that would go unnoticed in Mummy’s dark environment. It is also thought that part of the Kong ride vehicle track remains in place to support the ceiling.
ALSO VERY INTERESTING
So what became of the two huge Kong animatronics? Mostly unknown, but what is known is that the head of one of the Kongs lies under the track in the pitch black launched section of Revenge of the Mummy.