The thing is - it probably won't read video-files off USB. The hard drive to be connected shoud be of very low electric current consumption, as there is only 0.5A power supplied. Or you will need to get the external power for your HDD.
This unit is a great machine for the price. You can't get anything cheaper than this for the screen, DVD and DivX. I am enjoying it since day one. Oh, yeah...Built-In USB rocks too!
Try this link:
http://cgi.ebay.com/Nissan-Maxima-2002-Stereo-Radio-Mount-Install-Dash-Kit_W0QQitemZ220240210494QQihZ012QQcategoryZ85806QQrdZ1QQssPageNameZWD1VQQcmdZViewItemQQ_trksidZp1638Q2em118Q2el1247
I have just installed the AVH-P4000DVD and very happy with it. The most exciting is that it has DivX support. I would have installed the AVH-P6000DVD but lack of DivX in it killed that idea...Better unit though.