Just ordered the 400w system for my non bose brand new 2017 1500 crew cab LT Z71 i pick up this week. Can i also absolutely confirm that this sub is not going to make my rear seat sit any higher or angled differently than normal? I went with the 400w system not even realizing this adds amp power to my door speakers as well (thought it was just a woofer) but im having dealer install a kill switch for subwoofer. But my sons carseat cant be sitting at an angle.. TY ALL for opinons and help. Also i wont lose any steering wheel function correct TY