I live in a small town(about 50,000 people) and all the audio shops here have a limited stock i.e. they only have amp kits. I want to have one of the shops install my amp and subs in the back of my suburban but I am not going to buy useless parts. Where do I find cheap power cable and speaker wire? Also, the amp(MTX 1500DX) is pushing about 800 watts and I need the gauge wire I should be using as well(NOTE: it is about 20ft from HU to amp). Any help would be much appreciated. Thanks.