FICM compatability

[mr.c]

The dealer reflashed my '04 F350 6.0L after they told me that they wouldn't. I took it in with the buzz flash and it left without the buzz flash and a huge loss of power and about a mpg loss. My Autoengineuity scanner shows a VXBC9N8 calibration. I assume that is the inductive heat flash. I am interested in your FICM tuning so that I can get back the truck that I bought that had power. I am not interested in modding the truck. I just want the original power back. The truck is completely stock and it will probably remain so. It is a 11/03 manufacture date. I bought a spare FICM a couple of days ago. It is from a '06. Can that FICM work in my '04 with your flash? Or have I wasted some money?