Do I need to remove the bumper to install this grille?

No — this mounts directly to factory attachment points on the front bumper cover. You can install it with the bumper in place using basic hand tools.

Will this require any drilling or frame modification?

No drilling needed. It's designed to use existing factory mounting holes and hardware locations on your vehicle.

Can I repaint or polish this chrome finish if needed?

The chrome is factory-applied and sealed. If you want to refinish it, prep with light abrasive and test on a small area first — chrome requires specific coating products for lasting results.