RE: High wing vs low wing
I believe your talking about centrifical force. I could see this making a plane more stable having the vertical cg below the wing not above it, like a trainer vs a P51. I don't see how it would be faster given two planes traveling the same speed and turning the same radius corner.
The reason I ask is, a few of us want to get back into racing after a 7 plus year lay off. Back then the low wing planes where popular ie, scat cat, dodger and intimidator and the high wings were just arriving on the scene.
I personally don't like the look of a high wing plane and prefer to race a low wing, unless there is a big advantage to the high wing. Maybe form does follow function.