Do these mount at the factory headlight locations?

Yes — these use factory mounting points, so no drilling or bracket fabrication needed. Install as a direct swap for the original housings.

Are bulbs included, or do I need to source them separately?

Bulbs are not included with these assemblies. You'll need to source the correct bulb type for your vehicle's socket configuration — check your service manual or contact us with your exact year for the spec.

Will I need to adjust aim or alignment after installation?

Factory mounting means no structural alignment work, but a quick headlight aim check at an alignment shop after install is always a good idea to ensure both lights point straight ahead.