A search would do wonders..Theres plenty of threads on this already.

But anyway..Try reading through here for starters. http://www.pavementsucks.com/board/t...t=cummins+swap

There's a lot of work to it, like the above posters have said.

 

i did it, not hard at all... i did have a doner though, dont be afraid of an auto to manual swap, it is actually very easy, everything bolts in, i blue booked mine when i didit and going form the gasser to the cummins, increased the value of my truck over $10,000 my thoughts are, it is well worth doing and not a very hard job at all provided you have all the pieces