I have a narrowed 9" rear end for Fox bodies. It is a Moser Engineering (ME) housing, ME 31spline axles. The center section is 4.56 with detroit locker it has drum brakes. It is currently in my '80 Capri. The center section was not purchased from ME it was built by a drag racer that is a Ford technician at a dealership in Connecticut. Buy it/Steal it before Christmas for $1000.
