I answered your post in Powerstrokenation.
If the letters you found were in fact F7TF-?? then you have a DPC-202 PCM. At this point it doesn't matter what the box code is (TDE0/YBT1/etc.) because you have a DPC-202 PCM. Get a TDE1 chip and BE HAPPY!
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes.
SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory!
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