Originally Posted by MMZ_TimeLord
I would not do lead, but I would use '
Lab Metal'... it's a aluminum based body filler and can be machined after it cures, so I'm betting it would be just fine on a panel that gets 'slammed' (although I don't slam mine)...

Interesting looking stuff. Epoxy based like JB Weld. If it was filling the hood and I am not, I would still use the lead based filler that the automakers have been using to put bodies together forever.