Hey everyone. I have a 2007 G35 sedan with the stock system (not studio on wheels). This thing needs an upgrade by all means...My last car (96 I30t had an excellent stock system (Bose) which I added subs to and it was unbelivable...I need to get something like that on this car, but I know the components will need to be upgraded also...When I sell my I30t (which BTW is 5 speed manual and fully loaded (rare!)) then I can put about $1,500 to upgrade the system on the new car. I'm assuming the HU cannot be changed, but the rest needs to be swaped out w better components and subwoofers...I need good quality sounds that gets load and bass that will shake the groud. I'm not too much into the boomy bass, more into have the low freq. bass shake the car apart...Can anyone suggest what setup would suit my budget and needs? I will have things put together by a shop that someone suggested to me in La Cresenta (Devin Oliver @ Audio Advice)...thanks for the help everyone.