Loudsystem won't return my IM's. Okay, so I'm looking at getting into car audio just because I spend so much of my time driving... it'd be nice to have a nice sounding system. Vehicle: 2001 Ford Mustang Coupe, Stock Factory System I'm looking at these two headunits: Panasonic CQ-DF903U JVC KD-SX990 I like the looks and style of both of them, but I've gotta admit that the Panasonic's display is cool. How do both of these HU's perform? I'm also looking at changing out the speakers and adding a sub or two. I mainly listen to Hip Hop/R&B and occasionally to alternative and house. I don't need to win any competitions, don't need to wake up my neighbors... I just want something to enjoy. I currently have the following sub and amp in my possession. They were cheap so I grabbed them but still have the opportunity to return them. 2 - 12" MTX Thunder 4000 - $29.99 each 2 - MTX Thunder 4122 Amp - $49.99 each Will these do? I'm thinking of going for only 1 12" due to space concerns.. what kinda box would be good? Will the amp power the sub okay? I'm also looking at changing out the speakers and have no idea where to start. Any help would be appreciated. I'm trying to keep the whole setup under $500.