Audio Systems: stock radio, mercury lincoln, stock radio

Question
I want to put new speakers in my 2003 windstar. it is the 6 cd in dash radio, but i want to amp the speakers so the  car still looks stock. how do i know if the car has pre amp out-puts and how can i add on and auxilary imput for sirius or ipod? i also know many time sfinding a emote wire can be tough on a stock radio. how is that taken care of with a windstar's radio? thanks

Answer
there is no amplifier in that car and   and there is a a hih low interface with remote out  
there is also a plug in the back for aux you need the interface cdcfdnaux i will send you the link they also carry the hi/low remote


http://www.oemautosound.com/pc-173-86-ford-mercury-lincoln-auxiliary-input-98-to...