Will this bolt straight onto my truck without drilling?

Yes. This mirror mounts at factory rocker points — no drilling or bracket fabrication required. Line it up and bolt it down.

Does the glass adjust, or is it fixed?

The glass tilts manually. You adjust the angle by hand; there's no power motor. If your factory glass is damaged, you can source a replacement glass panel separately and swap it in.

What hardware do I need to install this?

Standard bolts that fit your factory mirror mounting holes. Check your truck's service manual for torque specs and bolt size — those points aren't confirmed in this listing, so verify before you buy fasteners.