Okay. So here is what I found out today from the boys at StopTech. Lexus has released StopTech from their contract for the ISF and are allowing them to supply the aftermarket for the ISF Big Brake Kit under the ST name. ST are in the middle of building kits for stock and are going to announce the release in the next few days.
In addition, ST is using an employee's ISF and their new BBK as a mule to test a new "radically different" carbon ceramic rotor, which they plan to release as an upgrade to all their current kits. Word is that their latest iteration of the CC brake will bed in within 5-10 minutes....
This means we can buy one of their kits in iron pretty soon. And, it means that we might have an option of upgrading our brakes to CC in the future.
According to the guy I spoke to Hotchkiss did a private and independent study for Lexus to evaluate all the various bits in their F-Sport line. The ST kit with the iron rotors outperformed our stock brakes by over 12 feet and gave a much more linear response. Interesting stuff...
I could not get them to give me a price. However, I would bet it will be similar to any of their 6/4 piston kits.