I used it on my wheels looks great so far 1,500 miles. On chrome I don't think it will stay. I spent 1hr on each wheel sanding and cleaning it off it's all in the prep. I know some people that powder coated their grill and it did not stay. So I think paint won't eather. Ryan
I would recommend against it for anything on the front of your car. Paint on the front of a car, since it's subjected to alot of impact stress, should always be baked on or powdercoat. Also, since the grill and trim are chrome, you will need to make sure that you thoroughly sand as much of the plating off as you can, otherwise even powdercoat will chip right off.
I have, however, used dupli-color with great success on brake calipers...the calipers on my Trans Am looked beautiful for six years after being done with dupli-color base/clear.
In areas where impact resistance is a concern, Powder is better than any liquid paint. The surface MUST be media blasted and cleaned for it to last. Since it is on the outside, be sure to use a polyester, not an epoxy powder.