Looking at picking up a used Performance pack 2 kit and I'm concerned I wont be able to get the software, I don't think I have a voucher Id number for registration...
The original owner should have their voucher # stored on their FP account under the Procal tab. But who knows if Ford tracks how many times it's been registered.
Once registered and/or flashed, the tuner and software are locked to the specific VIN... you can't transfer it to someone else. So you have to make sure it's not already tied to the first owner's car.
You should be able to call up FP and get details on the item and what the code is for use on your car if unmarried.