Re: IBZ USA F series pups
Yes, you can still order them directly from DiMarzio, but you will pay close to double what you'd pay for a stock pickup.
The F3 is a bridge pickup and is very aggressive sounding. I've not heard an F1 yet, but my understanding is that it's more of a vintage-sounding pickup. For more of the classic 80's sound, you should consider an F4 in the neck.
Despite what people say, the F2 and Tone Zone aren't that similar. I see where they get that, but it would be misleading to say that they're the same. The F2 is a unique and excellent pickup.