Audio Systems: Nissan Factory Radio, nissan sentras, level converters

Question
I am having a hell of time removing my sons 06' Nissan Sentras factory radio. I am planning on installing a few line level converters so i can connect an amp for highs and one for a single subwoofer. I am experienced in the wiring field of it but also dont really know how the whole Line out converter thing works seeing as the few audio installations i have done have involved  aftermarket equip.If anyone can help me even a little bit please contact me. Potential86@yahoo.com

Answer
hi
now there is new line level converters that give you the music and the remote turn on and you don't
have to remove the radio you can do that in the trunk
i have not work on that vehicle so i don't know how to get the radio out
this is a good site with some info
http://www.installdr.com/

and you can buy the interface from 407-933-1065

good luck