just purchased an '06 GT Premium

Need to change out the Shaker500 radio......looking at Alpine's ILX-W650, but unsure of all the wiring harnesses, HW, and accessories I'll need. Been a few days since dealing with this stuff, but fairly adept with mechanicals.

Yes, I've got even more radio questions.....Crutchfield is telling me that Alpine's ILX-W650 does not support the steering wheel control module. Anyone know the truth?