The signal bridge is a Aristo Craft, and it will work but not hooked up. The ballast is pea gravel, I go to the landscaping place, I have a 1/4 x 1/4 screen and screen out the big pieces and use the small 1/4 inch or less. Sorry it took so long to reply don't come here much. Don
Neat! Now comes the easy part and the hard part. The easy part is finding several copies of the same 1:25 scale model car kit to build for it to haul. The hard part is converting half of them into sedans, because carmakers do sedans but kitmakers don't.