Well I found my water leak.

[custom1970]

Ok, I decided to replace my broken ac cowl flapper. Well pulled the cowl and old flapper out last night and as usual, found a lot more rust than I wanted. I broke out the sand blaster and got it fairly clean, and soaked it with ospho. As you can see by the pics, I'm wondering the best way to fix the holes. My thought was por's then I guess wipe some bonds over it. Is there anything better than bondo? Keep in mind, welding is out of the question. I want it to look as factory as possible when I done, so any and all ideas are welcome.
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