Hey i just thought i would put this out there since i havent seen it yet.
www.crutchfield.com
Just enter in make,model, year, trim, options and it'll give you all the products that you can fit into your car.

Im sorry if this is repeated but i just wanted to make a simple reference for people that wonder if things will fit.

Crutchfield is nice to order from because i am told they provide vehicle specific instructions.
I am looking to order from there soon, but have not yet so i could not comment on the service.