Anyone know the clips part # or which one I need on ebay? I need every single clips and screw under the hood since my previous owner lost them all.

 

The clips are 90467-07211.

 

does that clip fit all of it?

 

For all the engine bay covers, yes. Same clips that came on my covers, replaced a few broken ones not long ago as well. If I recall correctly from when I was looking for that part number, the older 2IS's (06 and maybe 07?) had a different part number, 90467-07201, but the 90467-07211 replaced it.

 

I purchased some generic clips from discount auto that works better and will last longer than the factory clips.

 

They look very similar to these:
http://www.ebay.com/itm/50x-Black-Pl...-/272080105225