Originally Posted by williameub
The trans... I don't know. I've never read of anyone fitting a 4R100 into an OBS.
I have. The 4R100 is exactly the same size as the E4OD. The 4R100 is actually a modified E4OD.
The 4R100 will have to come with the 7.3L. The E4OD in the truck now won't bolt to the diesel. Also take the computer and all the wiring from the donor truck.
This swap is not too difficult when there is a donor truck to get all the parts.