Hi Dave.
Thread resurrection! My 2003 seems to do just this, replaced all the above and still the same. Just came across your thread.
When you say scuttle do you mean under the window? Or the actual front panel holding rad in?
Mine is odd, you have to have accelerated to lift suspension then it will do it, but not again until you've done the same. But it's all new now. Was just about to change front pads again to see if if it was them rattling