Metal Fillers to Repair body pannels

[fly fisher]

Hi,
I am thinking of using a metal filler to repair a inner body panel. It sits next to the engine bay, therefore needs to withstand some heat.

Most of the pannel is sound however there are some areas of corrosion which I want to sand back and fil if nessasary.

Whats the most approreate filler? Can you get metalized ones, which harden like steel?

Thanks,
Will

[fly fisher]

What about this stuff...
http://alvinproducts.com/ProductLine/tabid/62/aT/V...

Looks good... Anyone used it?

Will