Not a major project but a needed one and all I had to do was fund it. Had installed a Battery switch and second battery, all accessories were put on one battery and I have one starting battery, downside is they put the accessories on the smaller starting battery not the Heavy Duty deep cycle, an easy switch of the batteries on my end. A couple months ago I installed Polk Audio DB651's (4) now to push them I had them install an Amp and a sub just to keep me on neighbors bad side, had them install a vent for the sub, it doesn't slam like the Caravelle or my Super Duty did but it's clean, loud and has some good bass and not obnoxious.