When wire tucking your e36 you can remove the factory fuse box, but you're left with a giant hole. The best solution would be a beauty plate. This plate manufactured out of 11 gauge (1/8") brushed stainless will cover the open hole and will outlast the car.
 
The plate is CNC cut to fit exactly the chassis and seal noise/heat/debris out of the cabin.
 
Additionally, we make a "Kneepad" replacement panel. This allows you to reverse mount all relays and fuses under the factory steering wheel. All factory relays and fuse busses snap into place and it mounts into factory location.