Upper A arms
What I have done to XAs, XBs and XCs is to install the XD/E/F type upper A arms.
These are with the rubber bushes and this banishes front end squeek forever ! The ride was quieter afterwards and handling does appear to have improved as well.
Have done one XY and the arms fit OK there as well.
Next time, give this a try and you will be pleasantly suprised.
PS. Use the Ford type rubber bushes and not Noelethane or Urethane types. The Rubber works much better.
The XR family ---->
Muzza: a XR8 AU seriesIII...bog standard :)
TBH: (the better half) drives an ED XR6 wagon (Mock Dev 4 160rwkw, JMM extractors, 4 electric windows, Ghia door panels in XR trim, rear head & arm rests in XR trim, Momo s/wheel with Cruise, EL thermos, EBGT wheels, etc) things to come soon = EECV upgrade.