We are on SDK 15.0. The Aircraft Editor still displays Cylinder Displacement in cubic feet! (though it tells you to enter cubic inches) If you were to enter cubic inches in the Aircraft Editor, Save and Resync, I dare say your piston engine will have a little too much power!
I don't know of anyone using save and resync as it destroys your cfg formatting (this too should be changed) but please make this small change so that the AE displays your correct engine cylinder displacement.
Thanks, Don