Here is the basket I am thinking for my Prado...
eBay Motors: Westin Aluminum Alloy Cargo Roof Basket Tray 59 x 49 (item 250170730286 end time Jun-25-08 12:38:19 PDT)
The actual one I would prefer to get is 49 x 71 (this link just came up first) for 339 ish.... the problem will be the shipping cost but the rack itself is fairly inexpensive as far as baskets go... (dont think I can get one made for less at any rate.)
I will be attaching it to yakima rack (I am hoping to add a third or forth rail as soon as I can find someone in the bargain finder trying to get rid of a set...)
Hope that helps?
T