I'd like to replace my stock CD-player with a new head-unit that does MP3, has an AUX intput, and can control a remote CD-changer.
Assuming it'll be a single DIN unit, what do people recommend for mounting?
Put the new HU in top or bottom of the opening?
What to do with the rest of the "hole"? Blank plate? Cubby-hole? CD-caddy (e.g. Serious Auto)? Maybe some after-market gauges and/or a clock?