Gar.. exhaust swap went 98% smoothly..

When removing the old exhaust, I couldnt pop the hangers out of the rubber bits. So, I decided to unbolt them from the car, to make life easier.

Sadly, one of the 4 bolts busted. Eveything is installed, but im getting a crazy buzz due to the metal hanger only being held on by one bolt. Below is the only picture I could find.

I am tempted to drill a new hole, and either tap it for a bolt, or use a metal screw to attach the other side. any other recommendations on how to fix this securly?

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