The Dana 18 is found in 1941 -1971 Jeep vehicles. It is also found in IH Scout trucks. It's production spanned 30 successful years, making it one of the most famous and recognizable transfer cases of all time.
The Dana 20 is found in 1962 -1979 Jeep vehicles. It is also found in IH and Ford vehicles as well as a limited run of GM trucks in the early-mid 1970's. The Dana 20's design was outstanding and remains one of the strongest and most refined of all the popular transfer cases.
The Dana 300 is found in 1980 -1986 Jeep vehicles. It is one of the most respected transfer cases and is regarded as the gold standard by casual Jeepers up through the enthusiasts. While only provided in 1/4 Ton rated Jeeps, its strength surpasses this duty.
In 1980, the full-size Jeeps made a major shift in Jeeps 39 year history to a driver's side front differential and the widespread use of chain-driven transfer cases. These part time, chain driven transfer cases include the New Process 208, 219, 228 and 229 models.