Does this come with the bulb installed?

The assembly ships as the housing and lens unit. You'll need to source the appropriate bulb separately and install it into the assembly before mounting.

Will this bolt directly to my vehicle without modification?

This assembly is designed with factory mounting points to fit the original equipment location. Test-fit the unit before final fastening to confirm alignment with your specific vehicle condition.

Does the chrome finish need any prep before installation?

The headlight ships ready to install. Inspect it for any shipping damage, then mount it using your vehicle's existing fastening points or hardware specified in your service manual.