I'm thinking of getting a new alpine head unit sos I can plug in my ipod.

Am I going to have to change my amp/speakers too?

 

you dont have to but you should. get some infintiy speakers, components up front, and coxails in the back. thats around 300. then an amp, another 300 or so. get the 9835HU it rocks, the display is worth the extra money, i think thats 400. some dynamat for the doors, and your looking at just over a grand for a very good system before install.