Geoff has it covered pretty well as I know it. And I have to state that I don't feel I'm an expert, only one with 8 years of hands on experience in manufacturing the kits you see here. It came about not as a result of being a brake engineeer, but rather my time at Bondurant, as well as later working on the SHO kits which statred it all.
For those who prefer to crunch numbers, start with The Brake Handbood by Puhn.
In short, a slightly larger rotor with perhaps 1200 psi line pressure, put through a high Cf pad will provide much improvement.
The only comment I can add is that 'bigger is better' is not always true. With the proper pad and a reasonable size rotor (12.2) using only the smaller NDL caliper will net results that are well within the needs of most drivers. We can of course build bigger, badder kits, but the cost certainly goes up rapidly and the results are not going to keep up with it except at the most extreme levels.
