Will this glass work with factory mounting hardware?

Yes. This glass uses OE mounting points—your existing mirror hardware bolts straight up. No drilling or modification needed.

Does the glass stay stable at highway speeds?

Hard panel construction holds its shape under vibration and wind pressure. Mount it securely to the factory bracket using OEM fasteners, and it'll track steady at speed.

Do I need to remove the entire mirror assembly to swap the glass?

Typically you can access and replace just the glass element without pulling the whole arm. Refer to your service manual for the exact disassembly sequence on your model year.