I have had 100% of my external trim black power coated. The complete headlight and grill assemblies included. this is for a black 67. The place that did mine built a support for the headlight bucket grill work to prevent heat sag.
Thanks guys. I sent an email to my body guy telling him of the risks. I told him if he didn't want to risk having to replace them if he ruined them, then to just leave them and I would take care of that detail after I get the car back. He had also mentioned sand blasting them and I told him that was a bad idea too, that if he was going to blast them to use a soda blaster. I'm also on the fence with regard to whether I want to completely black them out or leave the vertical chrome striping.