I wasn't able to get the clips to go in...
Also, I had to trim the vertical part of the front deflectors (the part you don't see) so that it would go in the channel far enough. Otherwise, it would bend the back of the channel out, at the top.
I just ordered these on eBay today...they appear to be correct for the wagon.
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=160382031723
Pros:
Fits the wagon
Goes in the window channel instead of sticking on
Inexpensive and inexpensive shipping
Cons:
Apparently shipped from...
What about these?
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=160382032579&viewitem=&sspagename=STRK%3AMEWAX%3AIT
They say they will fit in the window channel (!) and for a wagon too. I asked the seller if they would fit a US model, but haven't received a response yet...