Quote Originally Posted by Scottfreee3
Iirc it's not so easy to put an E39 auto into an E46 manual.

You should be able to use a majority of the parts from the 2ltr, however electrics may be complicated. (This is going from a 4 cyl to a 6 cyl). A 6 to a 6 May be easier.
E46 320i is a 6-pot