Will this work with my current front bumper, or do I need to replace the whole bumper?

This bar is the internal reinforcement—your existing bumper skin bolts directly to it. No bumper replacement needed unless yours is already damaged.

Does this require any welding or drilling into the frame?

No. It bolts to factory mounting points using OEM hardware locations. Bolt-on swap with no frame modification.

What prep work do I need to do before installation?

Remove your current bumper assembly to access mounting bolts. Clean mounting surfaces of debris. Test-fit the bar before final tightening to confirm alignment with frame and bumper skin.