A few more factoids for the inquiring minds.
It appears that they have a engine building company (Willis Performance Enterprises) that is offering these engines in completed form for sale to enthusiasts. This is their website =>
WillisEngines.com
Joyridin's sharp eyes caught the C16 fuel annotation on the Dyno chart. For those that missed it here it is again;
Although they have a provision for a description of the blown version of the engine on their website, it is not yet populated with any data. When you review the piston offerings on their site for the engine, the do have a 10:1 c/r offering. This would argue for joyridin's suspicions about a 10:1 c/r offering for the blown version the engine.
Ed