One big thing is that the stock headunit doesn't put a lot of power out to the speakers. You're using stock HU and speakers so it won't really matter as much.. but changing to a higher powered headunit is the most efficient way to get clearer and louder sound. The 6x9"s should use an amplifier IMO.
Thanks for the Info. im just goin basic right now, better stuff when I get more money. it had no good sound at all, and the radio that was in it was a P.O.S. so anything from what I had was an upgrade
do you know where I could get the wires for the hookup, and where I need to insert them into the HU? I can figure out how to do the dash and put the Radio in, but im lost at how to install the rear speakers and the subs.