In any event those planes do +9, -3 G's. You don't fly that full envelope. It's just what it's capable of and sometimes you almost get up there and do that.
Where did you find a model with a 50% bonus on G's?
It flies like a jet at speeds up to 271MPH, has a very light feel on the dual control sticks, can carry a tremendous amount of weight for its small size, and its ability to withstand aerobatic flight loads of +6/-3 Gs while maintaining a very low operating cost compared to jets.
http://www.skythrills.com/our-planes/marchetti.html
You don’t fly 9g’s all the time.Okay? You may pull them in a tight turn but when you start tunneling out you back off. What I said was the plane was capable of pulling +9g’s and - 3. They were or are still used as close support a/c in some SA countries. You look up the stats. But yes, you can pull up to +9gs - just hope your safety pilot is there and awake.
PS - no fuel in the tip tanks either.