Do these mount at the factory headlight location?

Yes. These bolt directly to your existing mounting points — no drilling, bracket fabrication, or frame work required. Test-fit before final install to confirm alignment.

Will I need to replace the bulbs, or do these come with them?

Bulbs are not included. You'll need to transfer your existing bulbs to these housings or source new ones separately to match your vehicle's original bulb type.

What do I need to do to prep these before install?

These ship ready to bolt on. No painting, primer, or prep work is required. Inspect for any shipping damage, then mount at factory points and secure with fasteners.