I have. I retro fitted a front kit to my VE which was good but when I fitted the rear kit I found the car heaps more stable under hard braking, the front didn't dive like it did just with the fronts and it showed me how underdone the rear brakes are when you only have a brembo front. Even under normal use you require much less pedal pressure to pull up. To me its a mandatory upgrade.
You can buy the calipers on Amazon in the states for about $110usd each, the pin kit for $18usd and pads anywhere from $20usd to $110usd (Hawk HB194F.570 is what I use) and the correctly sized rear discs from Brakes Direct/GSL rallysport here in OZ for $240 each and they are 355x26 T3 DBA 4000 series and require no pad trimming like the people do that fit HSV rear discs that are 350mm. And if you want to use your standard brake lines you can as they fit the caliper or you can go braided like I did.
Total upgrade under $1,000 AUD
Was talking to someone who'd done this yesterday, he was saying the end result had enough capability that you'd have to be kinda insane to be utilising it on the road.
If you're not tracking your car (and do many people really track 1800+kg of Commodore more than once or twice?), do you really get that much out of rear Brembos? Apart from coolness factor?
