DNK

I see you powder coated the water tubes. I take it you didn't purchase the SS ones?

How hard was it to R&R the mirror parts

Theo- can the door handles be disabled enough to powder coa tall showing parts?

Don't think it will fall apart, just might leak ,eventually. Hopefully your correct.
did you get a new rubber plug for the sending unit?

That would be Fahrenheit to me
450 F.

The solder they used on that is a low temp solder. The temps for Powder coating  reach about 450 degrees.
I had mine ceramic coated as the temps in that process are almost half.
This is the info I received when I questioned powder coating mine.

Boy, hope you don't have problems with it.

Bean, you didn't powder coat the expansion tank did you?
Don