RE: ZDZ 80 Boxer Twin...H-9 33% Cap Good Choice?
I have both engines I run both on canisters, the twin is 200 RPM less than the single on just about any prop you try. I have also found the twin to be a lot smother. The 80 twin on canisters runs about the same as the single on mufflers, I think you got a good deal try to install KS cans and you will be a very happy camper. Just my .02