Put the empeg in a Tuffy console. Then you can leave it in the Jeep without fear of it being stolen. I've seen the aftermath of people trying to break into Tuffy's.. I've never seen one successfully broken into. The wrecked tools left behind when they give up is usually hilarious though. Unless they show up with power tools, they won't get in.

If you can find a small enough amp, you can put the amp in the storage compartment under the armrest in the tuffy console. I had my stereo in the stereo compartment and a large CB mounted in the storage compartment.