RE: What engine is this?
I have an .80, probably the best running Saito I have (out of 8 of them ). It's basically the same engine as the .65; the .65 has a brass cylinder liner, it was left out to increase the bore diameter (making the .80 an AAC). I run a 14-6 prop, and a 15-6 should also work okay. I like the older, "long stroke" Saitos, they even sound better. I haven't had any problems with mine kicking props; I use 15% all-syn Cool Power.