Do these mount at the factory headlight points, or do I need to drill new holes?

These bolt directly at the factory mounting points—no drilling or modifications needed. Just unbolt the old unit and swap in the new assembly.

Will I need to pull the bumper to install these?

Access varies by trim and engine bay layout. Some installs go faster with the bumper off; others don't require it. Test-fit before committing to bumper removal.

Do these come with bulbs and wiring harness?

Assembly only—bulbs and harness are not included. You'll reuse your existing bulbs and connectors from the original headlights.