Reputable Headunit Installation Shop in Southern California?

The owner of my "pre-loved" 2010 prius installed an aftermarket headunit. I took a peek inside and there were ten thousand cables connected to it, most not even labeled. Its an old eclipse headunit with GPS that i want to replace with a Stock-looking unit, but I know if I try to do this myself i'm gonna run into a headache.

SO. anyone know any shops they've used in socal that they absolutely love? I want to give them the green and have them suffer the headache If theres any that have worked with previous stock-looking units like the otto,rosen,etc would be best.

 

still looking

 

ya its probably not difficult to figure out. Its just the aftermarket headunit my previous owner used has A LOT more cables than normal (i'm guessing with the bluetooth mic out, backup camera, GPS antenna, XM antenna, dual ipod out, USB out, dual video/audio out for rear seats, FM antenna, and other things) its a headache to figure out which is which because the labels are either very tiny and invisible on the back of the headunit.. or not labeled at all. If I was going from stock to aftermarket, I'd probably figure out it, but at this rate i might have to start pulling on cables to see where they lead to... so i rather someone else do that.