I recently got a 2002 audi a6 3.0 quattro and my friend gave me his

Pioneer - Champion Series 12" Dual-Voice-Coil 4-Ohm Subwoofer
Model: TS-W309D4

i was wondering what the best compliment of amp and speakers would be to go with this sub. also i need a new cd player and faceplate because i have no auxillary plug so i was also wondering how hard it would be to get that accomplished with removing the old one

 

I have an ALPINE CDE-102 head unit, new for sale.
It has Ipod, USB and Aux ports.
You can easily plug your ipod and take control of it with the stereo buttons.
Can send pics if interested.
Thanks