Hidden Sound System Installation
I installed a modern stero system in the trunk and controlled with a remote control unit
   

Pioneer stereo mounted in the trunk. In upper right is the IR transmitter
An IR Repeater picks up the remote signal in the dash and retransmits in trunk
IR signal received in1/8th inch hole drilled in gauge holder
Sound system is controlled via remote transmitter
Custom audiosound speaker in passenger kickpanel
Custom audiosound speaker in driver kickpanel