Will this install into my factory mirror housing without modification?

Yes. This lens mounts at the factory mirror points — no drilling or cutting needed. Verify the mounting tabs on your existing housing before installation to confirm alignment.

Does this come with the adhesive or clips needed to secure the glass?

The glass lens assembly is included. Mounting hardware is not confirmed in the product specs — verify your factory mirror housing to determine what fastening method you'll need before installation.

Can I use this for the left side, or is it only for the right?

This is a right-side specific lens. The curvature and mounting configuration are engineered for passenger-side only. Order the correct side for your application.