"JP" wrote

No, that is not a Wright Cyclone. The engine in the picture is a double
cylinder row type, but it's difficult to notice at first. Look the lower
cylinder at seven o'clock and you'll see the front cylinder row push rod
arrangement in front of the cylinder. Look the cylinder left side of it,
at 8 o'clock and you'll see the push rod tubes behind the cylinder. That's
the rear cylinder row.

I don't see it. I vote for single row.
--
Jim in NC