1996 Chevy C/1500 extended cab
 

I just purchased this vehicle and it has the manufacturers radio/tape/cd player. Some of the buttons on the radio don't work, as well as, the tape and cd player neither one work. I was wondering if I could get a 6-disc cd changer from a new Silverado and have it installed in place of the original one. Would it fit with a lot of modification? Or is their not enough space behind the unit?