The T-5 you want is a 90-93 out of a Mustang. It is rated at 300 ft/lb as the 83-89 are at 265 ft/lbs. If you can find a 93 Corba Mustang T-5, that is slightly higher. Not sure the strength of your motor so maybe a beefier one if you have crazy torque.
Modern Driveline has very thing you need...