I have used Mark Sound in Schaumburg for years. Always excellent work and over-the-top customer service and satisfaction. I used to install all my own stereos and some for friends, and they were always there to help in any way they could.
I know the guys over at Tweeter in Geneva. He does good work and is a good installer. Talk with Travis Tyler(he's the sales guy) and he'll let ya know what they can do and what they would charge ya for it. Tell him you got his name from me and he should hook ya up. My name is Anthony...I used to work there...he'll know who I am.