How to install a 2002 qx4 bose head unit into a early generation q45

[kannii]

I have seen several people install the 6 disk head unit from a 2002 or 2003 qx4 into the early generation q45. I will love to do the same, but I am not in contact with this person that use to do these installion anymore. I have the new qx4 radio but nobody to install it for me. Does any of you guys have any knowledge of this? Please let me know if you could help.