Minor refinements grace the Mustang models for the year 1991. Convertibles get a tighter boot for their automatic tops, while new star-shaped 16-inch wheels are optional on both GT and LX Mustangs. The 4-cylinder engine is updated with electronic ignition, and horsepower jumps from 88 to 105bhp. Also, a driver’s side air bag is added.
1FA - Ford Motor Co.
C - Restraint system (C-air bags & active belts)
P - Passenger car
40 - Body code (40 - 2dr LX, 41 - 3dr LX, 42 - 3dr GT, 43 - 3dr GT, 44 - 2dr
convertible, 45 - GT convertible)
E - Engine code
6 - Check digit (varies)
M - Year (M - 1991)
F - Plant (F-Dearborn)
000001 - Consecutive unit number
Example:
1FACP40E6MF000001
Location: Stamped on the plate which is riveted to the driver's side of the
dash, visible through windshield; the certification label is attached to the
rear face of the driver's door.
