Probably the TR-3650. To confirm, look at the sticker on driver's door jamb. Look on the very bottom right, under "TR" Only make note of the first character. If it a 'K' then that is what you have, the TR-3650, manufactured by Tremec which one of it's subsidiaries is Eaton. Forget the rest of the letters and numbers, those identify the springs.
The Mustang GT (2011 model) has a 6-speed manual transmission standard and a 6-speed automatic transmission optional. The 2010 Mustang GT had a 5-speed manual transmission standard and a 5-speed automatic transmission optional.
The 2000 Ford Mustang GT came with a five-speed manual or an optional four-speed automatic
The 1989 Ford Mustang GT came with a T-5 five-speed manual or an optional automatic transmission
The 1994 Ford Mustang GT came standard with a T-5 five-speed manual
around 150 mph
139MPH is the factory rated mph but ive had my 2002 GT to 145mph with more left in it
Synthetic MERCON automatic transmission fluid in the 5 speed manual transmission with the 4.6 liter V8 engine ( according to the Owner Guide )
its on the driver side of the transmission near the back.
Its called a t5 tranny.
4 speed with a lock up torque converter
The 2010 Mustang GT is speed limited by Ford at 149 MPH.
The 2002 Ford Mustang owners manual shows : manual transmission with 4.6 L - SOHC - V8 engine ( Synthetic MERCON ATF , automatic transmission fluid )