I'll be interested to hear what you find out. My thought is they are interchangeable, but it would be good to know what the difference is between the two. Tugly has one of those and I have the other, and his F6 tunes worked on both without tweaks.
I have been playing musical computers all day.
I have 1 psd that has blown motor, but good ecu, I swapped into one with a chip, then that one into a non chipped truck then took my ecu with the f6 and put into my fathers truck and then left me with a non running truck if it didn't interchange.
Now I have a spare ecu (nvk5) that ill send to DP and get flashed with a 40hp tune for a good work truck tune. Then again swap it into a truck that gets used for towing and servicing equipment.