I know of one problem with the Corvair, the engine would fall out if you
stopped on a steep hill going up.  Happened to a friend of mine more than
once.
I know two brothers that spent a lot of time picking up busted Corvairs and
towing them out to their farm in Florida.  Must of had about 30 or so, all
over the place.  From time to time they would go out and "gather" parts as
needed.  I don't know what happened to the farm by now.  The kind of stuff
legends are made of.
ed- I got VW sickness, don't need no Corvair malady.