Would one of you be willing/able to confirm the internal dimensions of a typical relatively inexpensive -- say Atlas Trainman O -- boxcar? Say, either 40 or 50 foot, standard height roof, no particular style. I'm looking into doing a little project that involves inserting some electronics into a boxcar that would end up being effectively a display model of sorts. Not sure if it will even work, but step 1 is confirming that there's even enough space inside a boxcar to even bother, or whether I'd have to go G scale to make it work. I'd be much obliged if you could help with this. Save me a lot of trouble if it won't fit, or lead me down the right path if it would. Thanks!!