radio/stereo/amp/new tunes box

cheap amp sub and speakers from Walmart.
it cost me a total of 200 bucks for everything. now granted I do just plug my phone straight into the amp and throw it in the glove box and disconnected the speaker from the radio but I still have the radio in so at least it looks like I have one. the problem with mine is while it sounds great I can't run it while driving the car because it will blow up the stock alternator. so I would get a high output alternator like 140 amps or so. and this is with a little 400 watt amp, 2 6x9 speakers and a 12 inch sub. I'm assuming you're also redoing the wiring do that.