Pepper: Not all of the models were ripped, and those that were have been heavily improved.
Advice for everyone: If you can't get model transparency (Like the glasses on Ambient.Impact's scientist), download the DoD transparency dlls from one of the threads in the help desk forum (I think). Or use Steam. DON'T use both. WON: Dlls; Steam: No Dlls.
BTW, use my models
HIT's models are a lot better than the PS2 models. Conveniently, because some were ripped, they are very easy to convert and hack to bits. Look at the difference between the PS2 scientist and AI's scientist. Same with the grunts, although I liked the PS2 grunt. Barney looks very similar to the original, but has still been improved a lot.