Hey guys I was hoping that someone on the board has some info to help me out! I am getting a dukane 4003 in the mail soon and I want to set up a metal halide lighting solution, double ended 250W. Does Anyone here have a dukane 4003, and know if there is enough room to mod a MH bulb inside of it?? I have no idea of the internals of this OHP. Thanks a lot for any info!