Revolution Gear Dana 70 Rear Axle 3.55-4.56 Ratio Ring & Pinion 94-02 Dodge 2500/3500. Fits: 1988 - 1994 Ford 7.3L IDI; 1994 - 1997 Ford 7.3L Powerstroke; 1994 - 1998 Ram 5.9L Cummins; 1994 - 2002 Ram 5.9L Cummins; 1998.5 - 2002 Ram 5.9L 24-Valve Cummins; 1999 - 2003 Ford 7.3L Powerstroke.