they look damn good. i am doing a c5 caliper upgrade in the near future. a lot cheaper than most brake kits out there.
kore3 offers the kit about half way down for f-bombs. you can google around and find people that did it. you need to cut the old mounting ears off of your spindles, but well worth it!! and the 18inch wheels will let you get some nice Z06 calipers in there!