Sierra rear wheel bearing housings, how easy to make?

[Bonzo]

I can certainly see where you are coming from on that one.

An off the shelf / easy to fabricate solution would be ideal.

I have a small foundry near me, they have a small - medium capacity output & will undertake small batch work.

It my prove cost effective to have a small batch of castings made !!
A fair bit of money could be saved if you can provide them with the casting patterns, this is where a good deal of the initial outlay is spent.

Terrill Bros