Thanks Pete and Blake...
Good point about the seat base.
But I'm 5'8" so maybe that helps.
I want to run auto-x/road courses yet at the same time would prefer to install as unobtrusive and as minimum a cage as allowable. Although I don't know the details on it, I know Ridetech offers a bolt in cage now.
I figured going full frame would might help me avoid a permanent cage.
I need a lot more info obviously at this point.