A couple brake questions, For you 911 conversion guys Options

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Question 1: Which 911s used the 4 piston calipers? All I found on pelican for calipers were very similar to the 914-4 calipers (weaksauce).
Question 2: What in the suspension needs to be changed to go to 911 brakes? In other words, are the control arms different, or just the spindles? I know I'll have to go to five lug, but I do know what all is necessary to do that.
Question 3: What size rims do I have to run to stuff say 911 sc or turbo brakes under them?
Question 4: Any other changes I would have to do to the brake system besides calipers and rotors? I'm already running a 19mm master cylinder.
Feel free to answer any or all. Thanks for any help.
Mark D.

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In response to Jeroen's question, it's not BIGGER brakes that I really care about. Cooling is my big concern. I want vented, probably drilled rotors because this thing's gonna be driven HARD. I plan on doing lots of trackdays. Also, I would like 4 piston calipers because I don't really like the feel of the brake on 914. You have to really bury your foot into it to get not very much. I would like it to grab a little bit more. As for spending my hard earned money, well, racing is expesive. I may be nuts for wanting to race on my salary, but I see more brakes as a necessity if I'm going to get some serious power (which I plan to).
Travis, a T and an internally adjustable perportioning valve are going in as soon as possible anyway. I don't really care for the brake balance under hard braking and downshifting. I've locked the rears up a couple times going into a corner which is not a comforting situation.
One more question; I don't know the 911 models from that era too well, so what years are the 964 series. Thanks to both of you for your info. It's been very helpful.
Mark D.