Hello everyone I have some questions about the possibility of putting a 4.6with trans. out of a 2006 F150 into my 2004 lariat that has the 5.4 3v... Would this be a direct swap or would I need to change the computer, harness, exhaust???

 

I want to hear this too i want to do the opposite. I have the 4.6 and want the 5.4

 

You need to change the computer and harness. I don't know about the exhaust.