Here is my PM reply to Super55:

3B's memory is better than mine. I thought that I had posted the spray-welding information on the oldGMCtrucks.com website - if you are a member, you can read it.

However, 3Bs post caused me to remember that I had made a photo album of the spray welding). I should mention that the manifold cracked in another location when I installed it after making the repair (after assembling the three pieces on the engine and then having the surfaces planed at a machine shop).