AFAIK POR-15 will NOT adhere correctly to plastic filler/bondo.

If the areas aren't structural you might be able to lead solder them although i'm not sure if the POR will stick to that either.....

You could try a practice run on an old piece of scrap metal first.


1950 Chevy Advance Design 3100 in Scotland
In the Stovebolt Gallery
More pix on Flickr.
I've definately got this truck thing in my blood ... my DNA sequence has torque settings
"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.