There are 10 choices

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COUGAR
- (head only)
  - tachometer
  - Without tachometer
    - 140 MPH
    - 85 MPH
      - trip odometer
      - Without trip odometer
MERCURY
- (head only)
  - 120 MPH
    - unleaded gasoline
    - Without unleaded gasoline
  - 140 MPH
    - unleaded gasoline
      - KPH
      - Without KPH
    - Without unleaded gasoline
  - 85 MPH

Speedometer for 1978 Mercury Cougar

Fits: MERCURY head only 140 MPH unleaded gasoline Without KPH (change)

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