The NV5600 is a Heavy Duty close ratio 6-speed manual transmission that was used in 1998-2005 Dodge RAM 2500 and 3500 Series ¾ ton and 1 ton Trucks with the 5.9L Cummins Engines.
It was manufactured by New Venture Gear, a division of Magna Powertrain.
Specifications
Close Ratio NV5600 Gearing:
Several aftermarket companies are now making the short throw shifter for the NV5600 which gives the transmission a smoother engagement and driving experience.
References
New Venture Gear 5600 transmission Wikipedia(Text) CC BY-SA