Gonna swap put my two interior and two exterior speaekrs. Does anyone know what size they are? I believe the exterior pair are 6.5". Are the interior same size? I plan to change them to JL MX650-CCX-SG-WLD-B with a sub JL MX10IB3-SG-WLD-B. ANy reviews on these? What size amp do you guys recommend? Thanks. Just got the boat in July 2017.