Twisted Metal (PS3) models?

I was hoping this would be much more simple. A google search leads to the research about extracting the textures from the VRAM files, however there is nothing about the models, which are contained in 'ngp' files. Considering the format of the textures, and their placement, these files are also archives for multiple contents. Any chance someone could have a look at this one and see if there's some way to extract said models?

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