Hey I'm really sorry I didn't see this message. I know it's a year later, but I'm not sure you can do it without the blue plug since the 07-08 display has a completely different input. Unless you could make a custom plug, the green one wouldn't work....or make your own adapter. Installing the 07-08 radio probably wouldn't be too difficult, but I'm not sure if there is an additional plug input for the MP3 part of it