my 1st system i had 1 600 amp with a mtx 4500(it was in a trunker 96' intrepid)..nothing bad just knocked off my rear view mirror lol...2nd system 1000 watt amp with a borrowed type r 15 ****ed up my sun roof and also made all the plastic **** on the rear view mirror to come loose and now the little wires,plastic stuff just make anoying sounds of mine chevy TB 02...getting a system is some serious responsibility and bussiness...lol