you have to get a bell housing adapter $700 dollars then you have to get an allison tcm and wiring harness. $1500 dollars then you have to either buy a programmer called efi live to program your dodge ecm with gm transmission information. $750 dollars or you can try to find a duramax shop that already has it and save a little money if you factor in the price of the tranny. your at comparable price to super built 48re. even if you put an Allison in your still getting a stock tranny. with the mods you have the Allison wont hold up any better than the 48re will. I already looked into doing this more hassle than its worth. if you are still interested go to beansdieselperformance.com they specialize in cummins swaps and tranny swaps.