Lionel Stone made brass/bronze housings. I have seen others that were not the same as Lionel’s parts. I don’t know any of the other makers.
Greg Long
Has anyone looked at having them water jet cut? The side piece may have to be made separate, but Wj will cut this. Can’t speak to the accuracy, but WJ is pretty good.
Cislak should have a cast iron replacement pump available, give him a call. He use to have new and used cast iron units that will fit a 29 & 30, but he may only have one type available now.