I have the USA-1 in my 66 conv with the special kickpanels with 6 1/2" (?) speakers and the sound sucks. I want to change the speakers and system (with CD) without going overboard. Any suggestions for new front speakers which will fit the kickpanels and a new cd/amp config? Am not looking at back speakers because of conver, any luck with subwoofer in trunk? I went to some shop which customizes Stangs and got a quote for $2000.