Front panel grille blanks

Hi, I'm looking to find out what type of grille blank I should have on the front panel of the following. One of the part numbers is 171 853 662, solid. I haven't got the part number for the one with space on it.
A 1981 with two o spaces, 2 spaces
A 1986 with one space, 1 space
Thank you

Right side is an open grid , left side closed , on gti.

But you can't fit on opened version on the two side , that i've done.