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You'll want to program the new solenoid id. Forscan should be able to do it. Sure it might still work but the reason for the solenoid id is the variables in the solenoid resistances in each unit. Each one is different. Even the older 6 speeds are the same way. It'll work, but the shift strategy will never be perfect and might not last. Should be a white sticker on it somewhere.I'm pretty sure reprograming is not needed. Some of the Mustang guys have done the same swap on the 10R80'S with no issues. I will have to have the trans relearn, but I can reset that in the power programmer or forscan.