I know that people have used the integrated keys from the Fusion for the Freestyle and Taurus so I assume that you can go the other direction. I got my extra keys for my 06 Freestyle and my 08 Focus from carkeysandlocks.com. They were about $17.00 each. The 06 Freestyle and 08 Focus were identical blanks. I got them cut at home depot for free. They just stick the blanks in the machine (just like they were sticking them in a lock) and 30 seconds later you have a cut key. Then the programming (which you already have experience with) was the same for both cars. Their website doesn’t list the 08 Taurus but list the Freestyle from 05 – 08.