Does this work with my lower bumper valance?

This reinforcement bar sits behind the bumper cover and doesn't interfere with lower valance trim. Your existing valance will install normally over the top of it.

Will I need to drill new holes in the frame?

No. This uses the factory mounting points already present on your frame — test-fit first to confirm alignment, but no additional drilling is required.

What tow hook do I need to use with this?

The bar includes the receiver mount; you'll need a separate bolt-in tow hook rated for your vehicle's towing capacity. Refer to your owner's manual for the correct hook specification and torque specs.