Here is a model of a Reading HTn 70476.

I built this model about 10 years ago using an Intermountain USRA twin as the starting point. The second set of hoppers came from a donor car. The car sides between the bolster ribs were built up from styrene.

I was experimenting with this car using the magnetic air hoses. It got new formed brass stirrups at the same time. The experiment sort of worked OK. I have some new brass parts coming in shortly and there will be a new round of experiments with the magnetic air hoses. More on that later.