If a guy had "just" the right shape electrodes on a spot welder, the bracket could be zapped back on. Otherwise, clamp it in place using the broken spot welds for position, drill a couple holes in the cowl and plug weld it back on. I think it would be possible, although alignment might be touchy.

Kevin
1951 Chevy 3100 work truck
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1929 Ford pickup restored from the ground up. | 1929 Ford Special Coupe (First car)
Busting rust since the mid-60's
If you're smart enough to take it apart, you darn well better be smart enough to put it back together.