https://en.m.wikipedia.org/wiki/Porsche_914I know what you mean loose.
I was a bit confused when I got to that part aswell.
seeing as it was later in the production run it may have been the 2.4, but
I think Porsche would have wanted more than that to run in the over 2 liter class.
Although you never know.
However the 914/6 came in at 1991 cc still under 2 liters according to Wiki
under the technical spec chart.
Bob