Thanks guys for the quick responses.
Here's how the front end looks at the moment.
http://farm4.static.flickr.com/3607/358960...6fcd767.jpg?v=0
And, as you said, he gave me back two little plastic arch like things, that I don't know where it was before, or where did he take those off? Were these fitted to the front arch or the back arch? If they are for the back arch, I couldn't see any screw holes on the arch itself?
BTW, this was bought from Lexus dealer, I suppose this would be original then....