Can anyone tell me if you can swap out a 6.4 for a '03 6.0 in a 2008 F-series? Also will the '03 6.0 mount up to the automatic from the 6.4? the 6.0 currently is backed by a 6spd
You can do anything with enough time, money and resources.
Swapping a 6.4 for 6.0 is just trading one set of problems for another, but at least the 6.0 problems can be addressed.
Much easier to get 6.0 truck to start with.
If swapping, why not consider a Cummins swap?