Motive Gear Master Differential Installation Kit - 8.2 in - GM 10-Bolt 1964-72 2010417 This media is best suited

This media is best suited for street use

1969-1979 Checker Marathon

For Use With Flathead Fords From 49-53

Easy upgrade: fits all existing RM60 mounts

5 in Wide x 23 in Deep x 13-3/8 in Tall

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