The OEM is gonne be cheaper than to it after words . The other two options are aftermarket HID kits ( $150-300) or the complete headlights with Halos from American muscle.
2012 Mustang GT - Prem, 392 Rwhp GTO ( LS2) 498rwhp ( the best car seats)
Z06 (the widest rear tires)
CTS-V :shiny: (no options left behind)
TSX ( a great commuter)