My stearman is supposed to arrive today, and I decided to go with the Saito 1.50 cause its the only engine of the 3 I have to choose from that isn't "promised" to a project that that (conceivably) be ready soon.
I'm going to mount mine at a bit of angle so the head isn't straight down. My only inverted 4 stroke installation is a OS .52 in a Rascal 40, which needs to be started upright the first time of the day. Turning the stearman over is not an option I want to even have avaible!

Not looking forward to breaking in the 150 though. The first one was a bear to do.

John