Here are some pics of my 1997 BMW 528i system and exterior.
There is no build pictures because my camera got wiped...
The system is a Fi ssd 12 in a 4th order bandpass box runnign off an mb quart 1500.1 on 1 ohm with dayton 6s up front along with morel tweets running active on a precision power sedona s320.4
Other mods have been eibach lowering springs and custom powdercoated oem style 32 wheels.