I was looking at http://www.ecstuning.com
the other day, and they appear to have a very good selection of brake upgrades.
Are they the BIRA upgrades? Their rotors appear to be a little different, since they are plated and slotted, but they use the same calipers. Also, their prices are about what BIRA estimates, so they appear to be reasonably priced kits.
Has anyone tried their kits?
BTW, the Stage II is on sale for $999, which appears similar to the BIRA Stage I.