I've never seen one. I've seen iron side cover/ aluminum, but never all iron. That's probably a really early 833 you did, like a '74-'75. Pulled one on a '75 years ago and it was alum/ iron side.
Mostly, I'd be interested in tailshaft serial number at this point.
I don't mind going aluminum on the tailshaft housing, but if an iron one works and it's the same part number as the early 30 spline out, 307 bearing units, it will open up my tailhousing options significantly.
