Do these bolt straight into the factory headlight buckets?

Yes. These mount at the factory points with no drilling or bracket fabrication required. Test-fit before final installation to confirm alignment with your specific car.

Will the LED bulbs work with my Mustang's wiring and fuse box?

LED bulbs draw less current than halogen, so you won't overload the circuit. Consult your vehicle's service manual if you're modifying any electrical connections beyond the headlight harness.

Can I return these if they don't fit or don't match my expectations?

Contact ModSupply customer service with photos and details. Most returns are processed within 30 days of purchase; shipping costs may apply for returns initiated by the buyer.