What do i need to put a good sound system in my car?
If you want bass, you are going to need to buy a subwoofer, amp, maybe a capacitor if you are going to have a really loud system, amp wiring, and you can get a new head unit but you can also buy a converter for some stock head units. Now for the cost. It will definately depend on the brands that you get and how many watts you want. You can get some cheap brands that put out about about 1000 watts for around 300-500 bucks. But if you want the name brand products, be looking to spend around 1000 bucks if not more.