Attaching Window Regulator Gear Help!

I'm Replacing A Broken Regulator Gear, And It Has 3 Rivets In It, But They Are Not Pop Rivets, They Are Some Kind Of Beat Flat Rivets.
Any Idea Where I Can Get These Things?

^Might be able to substitute in some screws or use pop rivets? Go to this forum it will probley be more help on the subject.

www.FordMuscle.com (http://www.FordMuscle.com)