My 93s ECM pretty much caught itself on fire a few months ago. Whole cab filled with smoke. Little black thing inside burst and had black marks around it. Atleast yours died peacefully. From what I experienced those are pretty rare. You can get a rebuilt one for around $300. MS recycling had a stock nonrebuilt one from a running truck for $350. I told them I could get a rebuild one cheaper and they said that is their price. I did not buy from them.

I just want to tell you both good luck, and we're all counting on you.