So I was wondering if one can use a nut/bolt to mount the window door motors to the interior frame of the doors as opposted to using rivets. I'm about to drill out the rivets to replace the motor and would like to know what my options are, including width/length of nut/bolt combo and grade. Can anyone help me out? I couldn't find anything searching this topic, but I'm sure it's been done before.

Also, what's the best way to support the window once the motor is ready to be removed without it falling into the door. Can't be breaking any T-top glass afterall.