I just read a thread on another forum saying they were very unhappy with their wilwood kit and would probably sell it to you if you wanted. They said it was missing a lot of installation hardware. But the reason there are very few kits for the rear is that they are not necessary. The rear brakes do not do much of the braking, all of the Ford race cars (FR500S, FR500C) use the stock rear setup. If you are interested for the looks only, then you can look into the steeda kit as well. But for just performance, it is not worth it.