does it or does it only need to be specific to the stereo please explain
You never need to spend that much for wire. If the unit came with wires, they will be adequate. I believe what you are witnessing is marketing psychology from companies that tout such ridiculous features as oxygen-free copper and low inter-lead capacitance, none of which produce any audible difference - PERIOD. I even saw one of these shysters advertising that their wire was burned in by running current through it for some period of time. I work in the electronics industry and while there are plenty of reasons to burn in an electronic device (i.e. solid-state circuitry w/other active/passive components), there is absolutely no value to burning in wire.
it need a specific so it can hit hard
a radio wire harness has to be compatible with your car so when purchasing one you have to make sure and tell the store rep the year make and model and if you have onstar or aftermarket audio system with a amp like a bose system or infiniti system that comes stock or pioneer and another is monsoon then when you get it all you have to do is match up the wire to your aftermarket stereo they will be colored the same as your aftermarket so just match them up and plug the other side in to your factory harness.
