Will this duct bolt directly to my stock air box?

Yes. This duct mounts at factory points on your Altima—no drilling or brackets needed. Line it up with the intake manifold and secure with factory hardware.

Do I need to do any prep work before installation?

Just inspect the mounting surface on your air box for debris or corrosion. Wipe clean before bolting down to ensure a solid seat.

Can I paint or modify this duct after purchase?

The material accepts standard automotive paint and epoxy primer if you want to match engine bay color. If you modify mounting points or drill into it, test fit in your bay first.