Cat,
What about just changing the pistons in the Sterling SC engines? The heads could be milled to get the combustion chamber the CC that is appropriate to the CR and boost. What is your target HP on the Sterling SC re-do's?

If 800 HP is enough...any such thing? , you could just go NA and use close to 100% the current Sterling set up...low cost. These would push you well into triple digits and then you could switch to the new blower motors whenever you want to scare yourself
Ben

We know you're right and probably what will be done. They will make a nice set of NA engines. Sterling claims they should make over 800, maybe 850 with head work. In the meantime, dual fuel is interesting and in part, who knows what the future holds for fuel.

As for being scared, did I tell you about the old Ford ? She gets to shimmying when you get her up around 30 - 35 , suppose some have gone faster !!