hi
read your question, I'm not familiar with the one you mentioned, but I have installed the ultimate lockpick in my GX
http://www.coastaletech.com/APPLICATION%20GUIDE%20REV2.htm
works pretty good; but i would get the VAIS ipod video integration, that way you can play any move on your ipod.
Enjoy the GX we really like ours and it's still runs like new.