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

No. This insert sits in front of or integrates with your factory bumper fascia using the existing mounting points. You're not swapping the whole bumper—just adding the SRT-8 grille section.

Will this cover my factory bumper sensors if I have them?

Depends on your sensor location. If they're housed in the lower fascia where this insert sits, you may need to drill out access holes or relocate them. Check your bumper layout before committing to installation.

Does this come primed and ready to paint?

The insert arrives in raw panel form. You'll want to sand, prime, and paint it to match your bumper before install, or leave it as-is for a carbon or body-color vinyl wrap.