Oh and this link confirms how quick it can be. Although the record was set in 2005.
http://www.aafo.com/racing/2005/thun...stang_records/
And for some aeros (Design Limit Load Factor +9g/-6g @ 2600 lbs, +7.3 g/-4.9g @ 3200 lbs )
http://www.thundermustang.com/images.../aerobatic.MPG