Hello everyone, I'm fairly new to car audio systems, but I've been reading these forums for a long time. Installing a system in my vehicle is something I always wanted to do and now, finally, I have the means to do so. I want to make sure I do it right and build a sick system so I know caraudio.com is the best place to come to. I also will share my experiences along the way. FYI, I will be installing in a 2012 Kia Optima SX with stock Infinity Premium Sound System (8 speakers + 8" sub + external amp).