F2 was a company based here in Southern California, run by a gentleman named Ricardo. The company folded a few years ago, and nobody has really seen or heard from Ricardo since.
I never knew F2 to make throttle-body, let alone a SVT throttle body, but i could just be ignorant. I do know that his duratec headers are supposed to be quite good, and he made some other parts for foci that are now rather rare and somewhat coveted.
Sorry I cant help out more.