Hey, sorry for just noticing your reply. The car doesn't have many wires as it is, but I am in the process of rewiring everything in it (new alternator, new gauges, new wires, lights, etc.) so I think the wiring won't be a problem - the car is so barebones I could fit everything wherever I wanted with little problem. As to the head unit, it was a random one from a likely Chinese company that I didn't find too offensive to put in my car, this is the link, I don't think it mentions what you were talking about.

As for the rest of the items I was looking at, after a quick look back at my history, these were the sub, 5 channel amp, and speakers I had my eye on. I am starting to realize the $300 I had in mind is sorta starting to sound absurd lol. Also, would the sub still be appreciated being in the trunk if I were to play music while driving?