did you put the factory size gears back in, or a different ratio ?
the 07s had a TSB for the clutch....do you know if yours was ever replaced?
TSB
08-16-4 SHELBY GT500 - CLUTCH DRAG
Publication Date: July 28, 2008
FORD: 2007-2009 Mustang
ISSUE:
Some 2007-2009 Mustang Shelby GT500 vehicles...