There actually ARE 2 different part numbers for the GT and GTP digital DICs.
09360342 = GT Digital DIC (designated by the TRAC button to deactivate the Traction Control System)
09360352 = GTP Digital DIC (designated by the TCS button to deactivate the Traction Control System)
From outward appearances, the traction control button is the only way to tell them apart, so you'll want to check the numbers. If installed in a GTP, the GT TRAC OFF light blinks upon starting up the car. I believe something has to be swapped around on the pinouts in order to operate correctly if you switch GT <--> GTP. Found this all out while trying to test the 4 DICs I had before listing them for sale. So for your application, you'll want to get a GT one to not have to worry about all that when you custom install a digital DIC. Otherwise, all the functions should be the same between the two (MPG, miles till empty, etc).