Is it hard to hook up sub/amps to factory 6 disc Mazda radio in the 3? I want to get something like this to add a little more sound and bass. What would one need to do this job?
http://www.bestbuy.com/site/olspage.jsp?skuId=6983204&type=product&id=1099388637660
http://www.bestbuy.com/site/olspage.jsp?skuId=6983204&type=product&id=1099388637660