"Khandar Estrada khandos thrus indactu nosfrandus khandar dematos khandar."
I would recommend separate adhesion promoter. This allows you to choose the best color / shade / sheen of paint as there will be more of a selection. I would also test spray the paint first as sometimes grit or paint balls will come out and it looks like dust in the paint.
I would start with 2 to 3 light coats (3 to four minutes between coats) and then 3 to 4 light coats of paint (30 to 60 minutes between coats). I would use the can handle, you can get one from Menards for 2 or 3 dollars and lay the grille on the ground on some newspaper or masking paper and spray lengthwise for the first coat remembering to start off the grille and end off the grill. The next coat would be width-wise and so on.
Spray directly towards the grille the entire time you spray, about 18 inches away. If you have some spots that are not being hit, change the angle for the entire sweep to get an even coat across the grille.
I would, as an alternative, plasti-dip it and use glossifier over it. Both Menards and Lowes carries this stuff and usually some of it is on clearance.
Maybe post a pic to help give some contextual information to those unfamiliar with this rare grille.

Maybe post a pic to help give some contextual information to those unfamiliar with this rare grille.
Did you ever finish this? If not, here is my $.02 worth...Screw it, I'm gonna rattle can this and save money. I painted chrome plastic center caps years ago with Krylon Fusion Gloss Black and I must say they turned out **** good. Just cleaned and sprayed multiple coats. Then I laid them on my computer monitor that was warm to the touch to cure for a few days.
I'm gonna try out a few different plastic paints and use old fog covers as test mules.
Do you recommend an adhesion promoter first and then the paint? Or do these plastic paints already have that formulated in?
To help add protection I'm thinking of laying down a clear spray film like 3M Paint Defender to resist rock chips and crap.
I would recommend separate adhesion promoter. This allows you to choose the best color / shade / sheen of paint as there will be more of a selection. I would also test spray the paint first as sometimes grit or paint balls will come out and it looks like dust in the paint.
I would start with 2 to 3 light coats (3 to four minutes between coats) and then 3 to 4 light coats of paint (30 to 60 minutes between coats). I would use the can handle, you can get one from Menards for 2 or 3 dollars and lay the grille on the ground on some newspaper or masking paper and spray lengthwise for the first coat remembering to start off the grille and end off the grill. The next coat would be width-wise and so on.
Spray directly towards the grille the entire time you spray, about 18 inches away. If you have some spots that are not being hit, change the angle for the entire sweep to get an even coat across the grille.
I would, as an alternative, plasti-dip it and use glossifier over it. Both Menards and Lowes carries this stuff and usually some of it is on clearance.