Removing Mirror Glass for Powder Coating

Be careful -- a lot of mirror housings are thick pot metal that will not enjoy being heated up.

Oh goodie another thing to worry about. I bought a set of aftermarket repop mirrors for my 71 Scamp so I don't know if they will handle it. What has been your experience with aftermarket mirror housings? Here's the ones I bought: Mirrors

Any advice would be greatly appreciated as I know you have many years doing powder coating on Mopar parts.