Outer Sill Removal

[james.mould.1950]

I have a 2010 XF and am planning on removing the outer sills to check for and rectify any corrosion on the inner sills. It seems that this should be a relatively straightforward process. However, before doing so, I wanted to obtain a small supply of the fixings in case any get broken during the removal process. I am particularly concerned about the ones at the top which I believe are clips of some kind. After lots of internet searching, I cannot find any part number for these - or indeed any information at all. Can some kind person help - please!