I was changing my heads on my 2004 5.4...I got heads from a machine shop rebuilt that were from a 2009 without realizing it...Now the plugs are different. Does anyone know if the coils are the same of different. And is this going to be something I can finish up or not?
Thanks. The truck is in pieces so I need help ASAP.

 

That's good news...a head from 09 will be the revised version, which is why the plugs are different. The coils should work, but I would consider replacing those as well.

 

That was quick...Thanks, I hope you are right. Going to get plugs now.