Will these bolt directly to my Columbia without any modifications?

Yes. These mount at the factory connection points — no drilling, cutting, or adapters needed. Swap out your old housings and bolt these in place.

Do these come with bulbs installed?

The listing does not confirm bulb inclusion. Contact support to verify what's inside the housing before install, or order LED bulbs separately to be safe.

Are these street legal or DOT approved?

Product documentation does not specify DOT or SAE certification. Check your state's headlight laws before committing to these for road use — some jurisdictions restrict projector style or LED brightness.