I would stay away from those; dont be fooled by their hollow promises of higher HP or better mpg. save your money and dont waste money for a useless resistor.
HOpe is not too late to answer the question about 09 vs 10 SYNC.
No they are not exactly the same, most features are the same, but the 2010 Fusion adds Ford Services which gives you turn by turn directions, car diagnostics, etc.
yes that is true!!!! i was so excited about it that i did not provide the extra information/caveats ... and when you add the extra cost for an HID kit (yes we know those are not DOT) it would get to 1000$ :L)
people can go to the website to see close up images/vs Kevjur's video
cheers