[Kevin 1G Drummer]

The highest temp you would ever need to go is like, 170 and no more than 15 mins. Anything above that and you risk blistering the paint, or softening up the plastic in the headlights. That Testors stuff would probably work alright as long as you scuff the lights with a gray scotchbrite pad first. For a clearcoat: If I was to go with a bombcan, it would probably be Duplicolor. then wetsand it with like, 800 or 1000 grit, re-apply, then bake them again, then wetsand with 1500, then buff them till they're shiny.