Missed this post for a while.
Sorry Dinx still not found the cost, but I remember it not being cheap, as I had the black diamond discs and predator pads put on. I will try to dig it out sometime soon - promise!
I'm amazed he remembers it so well, it had the 17" wheels on at the time, I think. I did think about the rear conversion, but as it was just for cosmetics, and its not that noticeable with the 14's on, I didnt bother.