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I have a 9" 31 SPLINE DETROIT TRU-TRAC limited slip on by Mustang. It's a 31 spline Detroit Tru-Trac worm gear style posi traction unit for 9" Ford rearends. It will flat out hook up and launch you. Best straight line work though is a 9" 31 SPLINE DETROIT LOCKER, This a full on locker.
I have a the Currie Stage II Muscle Car rearend in my stang. It is designed for higher horsepower, more abusive street applications. Stage II includes the heavy duty 9" Ford housing and 31 spline performance axle package (CE-0005A), leaf spring pads mounted (CE-7001), Explorer disc brakes (CE-6012) , 3rd. member built in with the 9-Plus nodular iron sportsman case, 9-Plus nodular iron big bearing pinion support, Tru-Trac Differential, gear ratio of your choice, and 1330L yoke. This is a fully assembled rearend that is ready to bolt in!
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