The Pietenpol Air Camper was designed to use a Ford Model B engine and
looks best with that. There was a direct drive Corvair and if crank
issues were resolved that would be good too.

The Jabiru is ridiculously overpriced for a powerplant that is NOT a
type certificated aircraft engine, or IMO even one that is. If it was
priced like an overhauled Corvair I would not be so negative. It should
probably cost three or four thousand dollars. They cannot blow the
traditional product liability manure that LyCon trots out as they are
judgmentproof and AFAIK carry no significant liability coverage. I
doubt anyone would sell it to them at their volume of manufacture.

If it WAS a type certified engine AND the local FBOs operating 150s
were getting them STCd to fly behind them for their rental fleets I
wouild concede they are then an aircraft engine. Of course there is
only one REAL aircraft engine below 1500 eshp, the P&WC PT-6A.