Will this bolt straight into my car without modification?

Yes. This assembly uses factory mounting points — it's designed as a direct bolt-in replacement. No drilling or bracket work needed.

Do I need to buy the left side headlight too, or can I order just this one?

You can order either side independently. This is the right side only. If you need both, order the left assembly separately.

What comes with the headlight — do I get bulbs or wiring?

Assembly only. You'll transfer your existing bulbs and wiring harness from the old headlight during installation.