Recommend naman po ng cheap and good speakers. I opened up my door and wasak na yung speakers. Gulat ako sa condition nung speakers considering they "rattle" lang pag medyo malakas na. As in punit all around.
Targa? Anong klase? Anong size? How do I measure the existing one para malaman size?
Simpleng DIY kaya ba? I have access to a soldering iron so I could probably do it myself. A matter of soldering a few wires?

As you have concluded by now, I suck at this. hahaha
Car is an accord, stock HU, though might change to a Pioneer MP3 player sometime.