Ken Montero wrote:
Roundhouse (Model Die Casting) made such a truck (outside brake hanger) as a part for a kit of B&LE hoppers. The trucks were part no. 2919, "Roller Bearing (heavy duty)". Source: Walthers 1984 HO scale catalog, page 144. I don't know if the roller bearing feature can be cut off and a solid bearing feature can be added.
Yes, I did that and it was pretty easy.