Last week I bought the hood deflector from the dealer(for $105.60 CAD, including tax). I am an architect, so it was really easy for me to find the coordinates of the Bumpons, center supporting clips and body clips, etc. It took 20 minutes to install it. I trust the quality of the 3M Bumpons that you stick on the car (I am sure they wont damage the paint) however, I am not sure what will happen when I remove the "
center supporting clips"

. Because these three clips were installed just on to the hood (without any protective stickers). But the four body clips had a top quality 3M protective strips.
anyway, here is the link for the instruction manual :
http://www.flickr.com/photos/60569238@N03/5524630327/
I am really happy with this deflector. I have no noise problems...and when looking at the pictures that were uploaded by Philipa, (paulvanharte's Rogue) there is an installation error. The edge of the deflector should be parallel to the headlamps

.