James responded to me, ironically almost exactly a year ago, on this saying it's "suspended".
If you search on it, there was some discussion a while back on it. It is a little confusing that their website makes it appear it's still for sale.
On Jan 25, 2021, at 09:32, James K. Ball <
[email protected]> wrote:
Dear Mr. Gawer,
Continental Aerospace has suspended the manufacture of the 540 parallel valve Titan experimental engines. This decision was based upon the need to concentrate resources on our 4 cylinder engine models with 340 and 370 cubic inch displacements. Sorry we cannot address your requirement.
Thank you for the inquiry.
Sincerely,
James Ball (J.B.)
Continental Experimental Engines