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GMC 2500 PICKUP
- 3.21 ratio (opt HC8)
- 3.23 ratio (opt GU5)
- 3.42 axle ratio (opt GU6)
- 3.73 ratio (opt GT4)
- 4.10 ratio (opt GT5)
SUBURBAN 2500

Front Axle Assembly for 1978 GMC C25 Suburban

Fits: GMC 2500 PICKUP 3.42 axle ratio opt GU6 (change)

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