I just bought the CNC dual master setup for my finished car, because I didn't want to do the mods for the power booster, and already had new, good quality pads. The CNC is pretty much a bolt on affair, but I had to make some mods to my setup, to get the adjustable pushrod to align correctly with it. I can't tell how it performs yet, though, because my trans is still not back in. I've been following these threads for a couple of years now, and have yet to hear someone complain about brakes with the CNC setup. By the way, you can order it from Mike Forte, a forum sponsor.
FFR 1686 (copperhead) Black with copper stripes - on the road 9/03! Dual-quad, aluminum headed 5.0 with IRS, and 3.55 gears - Sold and headed for the Autobaun!