Oe - Guy ,
Go to advanced auto store ( old discount auto )
Get some dupi- color spray
Adhesion Promotor
Clean chrome radiator parts with alcohol
Then spray with adhesion promotor
Goes on wet looking like light aluminum spray
paint dries clear , then just spray on your black paint
Advantage:
No scratching chrome plastic paint
Black paint can be removed , later if you wish
Brought back to stock with no scratches any where
Also can use adhesion promotor on other plastic chrome stuff
Buy dupi color chrome paint & or anodized paint , an it looks
exactly this good
YouTube - Duplicolor MetalCast Paint - ANODIZED COLOR
So using it does look good
Wayne