Hi all, I have a 2002 M Roadster and I need to replace the stock HK subwoofer... I did some research on other forums and many folks were recommending a Kicker replacement but that model (4 ohm) has been discontinued I believe for some time... Does anyone know of a currently available drop-in replacement that will work will little to no modification?? Alternatively, can anyone recommend a specialty shop in the Philly area that could do the work? Thanks!