Give Andrew a call at Austraco. He should know how far off the Pro Armour ones are.
If you need to replace your heal guards while waiting, shoot me a PM as I have my standard ones just sitting in the shed.
Other option is to do what I did. http://www.ktmatvhq.com/forum/invision/ind...p?showtopic=367
sounds good getting the pro armour, are you able to help us with a number or email