thanks for the help guys yep I have a BA going by your replies it seems running a headunit is probably the better option, still going to think about both options though. smicky, im wanting to run only 1 sub,not sure where you got 2 from,and yeah im not looking to buy some cheap crappy equipment, id like to go with the better brands as you really do get your moneys worth and quality. really what I want out of my system is for it to be clear, loud and have very good bass. I was thinking of running better 5x7's in the front and 6x9's in the rear with spacers so they can fit,,but you made a good point about concentrating more on the front as that's what I will be listening to. will upgraded 5x7's sound better than the 6x9's in the rear?? and will they be as loud and clear? and also,,when looking at subs and amps,,what is the difference between the rms and rms peak? and what should I be looking at?? example (an alpine Type-X 12") : Power Handling * Power Handling (RMS/peak): 1000W/3000W * Power Range (RMS): 500W-1000W