I just bought a 1973 Winnebago brave, LOL.($100, bucks steel crank 440)
So at first I got excited, when I saw
MiradaMegaCab's post with photo, and that he was in NY.
Then I saw gutted inside, and its in SD, LOL!!!
I would 2bl check that its a 440 and NOT a 413.
I see it has the 'Motorhome" heads/waterpump, and the single snorkel air cleaner, holley carb, and the spark plug wire holder on driver side valve cover.
I am not a Winnebago expert, but AFAIK 440's had the thermoquad and duel snorkel air cleaner.
YY1 is correct, not a ton of "SCRAP" weight, as they are fiberglass, foam,fake wood panels, and lot of plastic.
But they do have Dana 60 or 70 rears.