LF,
I have a Moki 2.10 on my 80" Lanier CAP 232. I haven't gotten it completely figured out yet, but I love it. In fact, I bought one for my new GP 1/3 Pitts, too! If you get one, learn from my experimentation - use a good quality prop. I tried a Zinger, but it didn't work well at all. I now fly with a Mejzlik 20X10 and it works great. Also, I was told to use an OS F plug. This, too, works great.
The Moki in my CAP is on its side and I don't use any type of pump/regulator (Bisson Pitts muffler) - set the main needle a little on the rich side and the engine still pulls like a work horse without going lean. Also, I've found the idle mixture setting to be very sensitive...very sensitive - make only tiny changes to this.
I'm trying to find an engine mount that will work with my 1/3 Pitts. I bought the radial Moki back plate mount, but it's too big for the engine box. Have you heard anything with this regard?
Get the Moki. Although it's a bit of a heavy drinker, you won't regret it.
Woody