Wasn't an option - the factory head unit went south on me the day after I bought the car and I HATE driving a car like this without tunes . Installed the Sony MEX-BT3000P.

Not trying to advertise for Crutchfield, but when you order from them (which this unit was my first order from them), you get EVERYTHING needed - factory adapter harness, antenna adapter, the special tools to remove your factory head unit and all the instructions needed to install your new toy. I paid $130 and couldn't be happier with my purchase and it only took about 4 days to receive my order. MrMiata is correct in saying that there is really no place for the "carrier" to be secured once you get your old unit out of the hole. He used screws, I ~carefully~ drilled a couple of holes in the inner area so the tabs could fold into the holes. After that, it's a cakewalk installing the stereo.

Good luck!!