04 nav in 97 grand prix?

I am going to be putting a navigation unit from a 2004 grand prix into my 97 grand prix, I know the 04 uses a class 2 bus for the ignition turn on and to verify vin #s. I have read that you can lift pin 8(power pin) on the eeprom to bypass the theftlock? if this would work, what could i do to make the radio turn on since i have no class 2 wire? is there something else i could tap into on my 97 to power it on? Another idea i have is maybe getting a 04 bcm, finding the pinout, wiring power to it and running the class 2 data wire from the radio to it, so i would have power and this wire connected just to tell it to turn on, leaving my stock 97 bcm functioning and untouched.  i am posting here also and have a few links to what i have found http://www.grandprixforums.net/f41/04-headunit-in-97-03-gp-26435.html

here is the link to where someone bypassed theftlock on a gm class 2 radio by lifting pin 8 of eeprom

http://www.automotiveforums.com/t899623-bypassed_theftlock_on_gm_chevy_class_ii_mp3_cd_hu.html

there has got to be a way to make this work. if i can get the radio to turn on showing an error or whatever it may be, i can handle it from there. even if the 04 bcm has wrong vins and whatnot, it should turn on with theftlock activated i would think?

I need the pinout for this navigation unit, came from a grand prix, i can post the number that is on it if its needed, anyone here have access to the pinout?