Will this bolt straight to my Grand Cherokee, or do I need to modify anything?

It bolts directly to factory mounting points — no drilling, no brackets, no fabrication. Just align and secure at the OE holes.

Does the bulb come installed in this headlight?

The assembly ships without a bulb. You'll install your own bulb once the housing is mounted — standard H7 or equivalent depending on your vehicle's original setup.

Can I install this myself with basic tools?

Yes. You'll need a socket set and a few minutes to remove the old unit and secure the new one at the factory holes. Hand tools only — no special equipment required.