Spray bombs??

I've had good luck, not on my Barracuda but other cars. I did the hood of my van with spray cans. My painter friend saw it and couldn't believe I did it with spray cans!

I put it on pretty thick, not so thick that it runs but thick enough that it looks wet. Nice gentle back and forth strokes, releasing the button at the end of each stroke so you don't get too much build up at the end where you reverse direction. My finger ached after for hours, but it was worth it! I hold the can close too, closer than the directions say.

You might want to try on a scrap piece of metal first. Hope this helps.