MY RESEARCH I THINK ITS A 1970 -1974 CHALLENGER REAR HOUSING NO CARRIER
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DO YOUR RESEARCH I DO NOT KNOW MOPAR ON RESEARCHING THE MEASUREMENTS I THINK ITS A 8 3/4, 10 BOLT CARRIER, PERCH TO PERCH IS 46" INCH CENTER, TUBE HOUSING IS 56 3/4 " INCH, 61" INCH AXLE TO AXLE, AXLE DIAMETER AT CARRIER IS CLOSE TO 1 1/8" th inches, 31 Spline give or take maybe 30 Spline ... ASK QUESTIONS IF NEEDED .. PICK UP IN EAST PETERSBURG, PA.... THANKS FOR LOOKING , SORRY I DO NOT KNOW MORE ...