I have an Intermountain F7A Southern Pacific shell I'm going to install on a spare Genesis chasis I have. Looking over the Intermountain shell it looks like I can add lighting to the number boards and marker light. Just wondering if anyone has done this before and has a good method of doing so? There is nothing on the inside and I will have to build what is necessary to house the lighting. The Mars light and headlight are no problem. I will probably use a Tsunami sound board.