Looking to do a 2006 mustang v6 v8 swap and was wandering what would have to be changed

 

Basic answer, you will need to swap the ECU, transmission, and get a tune. A friend of mine has done several and did an extensive write up that is on Facebook - have to find his posting on it.

And you will want to swap the rear end for the 8.8". The open diff 7.5 won't last long.