We are Grateful for YOU! Up for sale is a genuine Ford Mustang 3.8 ECU ECM PCM computer with the part number 1R3F-12A650-BC. This computer is designed for OE spec and performance/custom use, and comes with a 3-month manufacturer warranty. The placement on the vehicle is front, and the interchange part number is MP2-101. This is a great opportunity to get your hands on a high-quality computer for your Mustang.