hi there...i'm thinking to add-on two speakers into my rear doors. i went to circuit city and asked the price, guys told me if there was no wire ready, they gonna charge more than $100 for installing wires and materials...i don't know...and i didn't even try 'cause they said if they took off the door panels and only looked at if there was any wire...still charged 30 something bucks...so i drove away. does anyone know exactly??? or which brand's speakers fit my MP3??? Thanks! 
