W204 under seat storage retrofit?

[jayboy222]

Hi all

My wife has just purchased a 2014 W204 C Class Coupe which doesn't have the under seat storage compartments which I find really handy on my E Class.

I think they were an option as I'm certain I've seen them on W204s before. Does anyone know if they are possible to retro fit?

If so, what are the part numbers and is it an easy DIY job?

Thanks