Ah, I busted one of mine when I replaced that bracket as well.
I drilled it out. I used a carbide center drill on it. Cuts like butter. Then I taped the hole to the next size up. If u can drill it straight enough, you might be able to save the threads.
1995 T-bird 4.6l - Eibach lowering springs, Cobra R hood, One 12" sub woofer, Alpine type-R front speakers. 16.249 @85.11mph 1/4 mile
2001 Pontiac Trans Am WS6 - Cam, headers, HPtuned by me.