49 - 56 Ford except 312 equipped or Station wagons and Police Specials have the same gears and diff. case.
They will interchange with your 49 Mercury rear end pieces.
Ratios available
3.22
3.30
3.54
3.78
3.89
4.09
other close variations......3.55, 3.90, 3.91, 4.10 and 4.11
