I've removed my bulkhead because i'm building a campervan. Now I'm left with holes and I wonder if anyone know where I can buy the parts Seen in the picture(not my van)

I've marked them with one arrow for each part

https://forums.motorhomefacts.com/index.php

have a look here towards the bottom of the page a whole section on self builds.

The part number below are Fiat ones for 5 pieces - the two B pillar trims, the black plastic boxes for want of a better description that go around the bottom of the B pillars and finally the horizontal trim that goes between the B pillars and under the head lining.

735532680
735532633
735532644
735532877
735532868

I haven't come across the part number for the in fill piece between the horizontal trim and the parcel shelf yet. If you find out it would be useful if you could share it here.
There is also a floor trim but I don't think many would find that useful for a camper conversion, it's part number is 71753566.

Hope that helps!

Having seen other images, I now believe that the section indicated with the upper arrow is part of the shelf unit and not a separate part.
I've only ever seen it on the beige coloured shelves.