RE: what engine is better?
I have a Hanger 9 Mustang with the Saito 1.00. It is an excellent combo. In fact, if you look at the Horizon ads for the plane, this is what they recommend. Others in my club fly this Mustang with YS .91s and YS 1.10s. Some of you guys are so hung up on OS engines you don't make any sense...a .65LA in a .60 size P-51...drink some more coffee!