Originally Posted by sgtdave
Advance adapter makes a kit to change over to a Dana 300/231/ 205/203 transfer case. The kit gives you a new output shaft 23/27 depending on what T case you want. They are all over $500.00 so it will be pricey.
I went with a TF727/D300 combo it was $350 with the T case this may be a better option for you The TF727 is a very strong trans being used behind most of the Mopar big blocks in the muscle car days. Just some food for thought.
Just for a note, if you have a 1980-1991 FSJ TF727, a Dana 300 will bolt up with no adapter.
Also, the TH400 was used behind GM big blocks as well. The TH400 and TF727 are very equal in strength, they will hold up to a lot of abuse.