I've been hunting for the O.S.T. to the PS2 Ghost in the Shell game, so far to no avail.
Any help would be appreciated!! :)

You mean the "Music Archive Sound Files"? here it is:

https://mega.nz/#!UdsXFa5J!hoQzJeV0dc0CQOY404gRoROPal600Og7wJkRHKQrM-U

Damn it, that was the title of it??! And I've seen that title before. XD
You have my thanks!