Do these bolt straight into my vehicle without modification?

Yes — these mount at factory attachment points. No drilling or bracket fabrication needed. Pop out the old housings and install these in their place.

Are bulbs included, or do I reuse my existing ones?

Bulbs are not included — you'll transfer your original bulbs from the old housings into these new assemblies. Same bulb type, same socket.

Do I need to wire anything, or is this purely a bolt-in swap?

Pure bolt-in swap. Electrical connectors match the factory harness — no splicing, relays, or rewiring required.