Will these bolt straight into my vehicle without any modification?

These mount at factory rocker points with no drilling or bracket modification needed. Install uses existing holes and fastener locations.

Do I need to replace the bulbs, or do they come installed?

Bulbs are not included. You'll need to transfer your existing bulbs from the old housings or source replacements separately—standard H11 and H9 configurations, depending on your setup.

Can I return these if they don't fit right?

Test-fit before final installation. Once wired in, return eligibility depends on condition. Reach out to ModSupply customer service with photos if fitment concerns arise before you commit to the installation.