All I have received is the painted plastic cowl, but as the fiche only shows an assembly I was expecting a few more bits.

My question for the assembled masses, is whether I need the extra rubbery bits that I see in the parts fiche? Looks like a rubber block under the cowl, and a piece of trim that fits on the front lower edge of the cowl, presumably to avoid damaging the seat fabric.
Thanks for your help and advice.