No , if you have everything all the will charge is wat material they may have too use and labor
No they will install it for you
No. We had a friend give us an amp and they installed it for us! We've also bought our own speaker box and they installed subs into them and we bought our own head unit (stereo) and they installed. Each time was on different vehicles! They are an awesome group!
No you don't have to buy one from them. We even had our own wires so they did not have to charge us on the "supplies" end either.
I don't think so, but you could call and find out definitely
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