yes the parrot does goes through the front speakers, I heard on some car kits it goes through all speakers and can be distorted. the mic can go the A pillar. However I had mine put in the middle, by the rear view mirror, as I heard it could interfer with the side airbag sensors on the A pillar. this could be bullsh!t, but by putting it in the middle, it enables the passenger to be heard too.
hope that helps.