Maybe the warbird forum would be a good place to post your question. Obviously you
aren't a beginner and this is the beginners forum.

But if you really want a good engine and servo package for the H9 corsair a Saito 1.25 or YS 1.20 with
JR 821 digitals on all surfaces would be a nice setup. Pricey for a plane that has a
90% chance of going in on it's first flight. But if it survives and you learn how to fly
it will have a good package.