Do these headlights bolt directly into the factory housings, or do I need brackets?

They mount at the factory headlight points—no brackets or adapters needed. Once you remove the OEM units, these slide into the same holes and secure the same way.

Are the LED bulbs already installed, or do I need to buy them separately?

The projector assemblies are complete units. Confirm bulb type compatibility with your vehicle's manual before installation to ensure proper fit in the socket.

Can I paint the chrome housing if I want a different finish?

The polished chrome is sealed. If you want to change the finish, light surface prep and quality automotive paint will adhere, but test on a small area first—chrome requires aggressive surface treatment to ensure paint stick.