Depends on if you want to retain the DIC. Either way you will need:
-Mono amp (or 5 channel if you want to power the speakers with an amp and dont want to buy 2 seperate amps)
-4 channel amp (assuming you want to power your speakers off an amp)
-power wire (i would recommend 0 awg)
-RCA cables (1-3 depending on amp choices)
-Speaker Wire (18-16awg for speakers, 14-12 for sub)
-an antenna adapter
-fuse (amp rating based on the wire you are running)
-wire terminals (the things you put on the end of the wire to connect to the battery terminals, but i cant remember what they are called
That should be it. I dont believe im forgetting anything.
But, if you`re going single DIN you will need the Metra 99-3303. If you are going double and want to retain the DIC you will need the 99-3303 and the additional double DIN dash piece from Metra. If you dont want to retain the DIC you just need the additional double DIN dash piece from Metra.