If kit makes for conversion, as the under frame is a separate moulding to the body. At first I thought of building a new deck from strip styrene, but decided to cut off the body from the deck, then cut out all the holes to reproduce the skeletal appearance of the NQKY. If planning to have the wagon fully loaded, then probably do not have to cut the deck holes; but there are a few details to add.
Above are two NQKY wagons, each different. Note, the bottom photograph has had more weight cut out of it than the unit above.
This how the underframe will look, with the extra pieces removed. I have also replaced the plastic airline that is included, with 1/32 brass rod. I used the original to bend to shape.
|Deck cut out and added pieces in place.|