Why not jump into the 21st century and forgot old fashioned CDs? Buy a iPod or similar MP3 hard drive player, load your entire music collection into the thing, then get a miniplug-to-RCA adapter to wire it straight to an amp hidden in the back. They even sell a cradle to keep your iPod in place while you drive.
Sure, MP3 doesn't sound as good as a CD, but are you really going to notice the sonic loss in a noisy GT?
Sure, MP3 doesn't sound as good as a CD, but are you really going to notice the sonic loss in a noisy GT?