gt500 headunit into gt shaker500

[Gold'n'Black]

I have a gt500 w/lcd display(2007) and was going to put it into my car is there anything else i need to bring with it? different harness or anything? i have a 05 gt w/ shaker 500.

i dont know what i am getting myself into just want to make sure i am not going in way over my head and make sure i dont forget anything. (done head unit changes b4 btw)