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4x2
- 10 bolt cover
- 12 bolt cover
4x4
- front axle
  - GM manufactured
    - 2.41 ratio
    - 2.56 ratio
    - 2.73 thru 4.11 ratios
  - Spicer manufactured
    - 2.76 thru 3.73 ratios
    - 3.92 thru 4.11 ratios
- rear axle

Ring Gear and Pinion for 1978 Chevrolet K10 Pickup

Fits: 4x4 front axle GM manufactured 2.56 ratio (change)

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