hi guys, what units ar eth ebest for the navigation?

then what units would fit the best into the sc300 center console/dash, i want to run my full stereo setup through the unit so i can do away with the full on nak setup. please let me know whaat u guys think.

also a good sub to replace the sc300 stock free air sub. i want to say its a 19. again more help here even more appreciated.


THANX GUYS!