Hood end showing lowered cab.
In my younger days I happily accepted broken clockwork trains and tin-plate track from fellow students who thought that they had outgrown their toy trains. The Big Big Trains ran well on the tube rails and could outrun the clockwork engines, of course. However getting trains between the two systems needed rails fixed to a thin baseboard. It was not tidy! For the 50 year revival I printed adapters that allow the tracks to connect accurately and easily.
The gondola car was one of my favorites for reliable running on the outdoor line than ran through three properties (the neighbors had kids of the same age). I painted it matt black to match the NSWGR stock at the time.
These days such alterations would be heresy and vandalism to collectors’ pieces. However in those days they were just toys.