[flipper35]

I used a pair of Boston Acoustic sattelites in the dash. You can't see them unless you are sitting in the car and even then they are small enough they aren't noticable. I also have a set of 6x9s mounted high in the bulkhead similar to a Viper. I use a Blaupunkt in dash CD head unit and a flexible antennae in the trunk. Cruising at 70 I can hear the music just fine, but I use it mostly in town. It may make a difference where the pipes are pointing, mine will chirp car alarms cruising easily in town. You cannot converse and listen to music at the same time so I don't even put mine in when I have a passenger.

Get some headrests out of a Fiero, they have speakers built in. I don't know how you would mount them though.