Manufacturer: PEM. Differential Case - Tru Trac - Assembled - 3.70 Ratio - 31 Spline - Steel Spool - Natural - Ford 9 in - Each.
MOSER ENGINEERING 8999K 3/8-24 for Ford 9in Center Section Stud Kit
Nodular Iron 28 spline PEM Heli-Trac Center Section 9" Ford W/ Premium STG Gear
9" Ford PEM Nodular Iron 37 spline True Trac Center Section with Premium STGGear
Nodular Iron 31 spline PEM Heli- Trac Center Section 9" Ford with Premium STG Ge
9" Ford Nodular Iron 35 spline PEM Heli Trac Center Section with Premium Gear
Nodular Iron 31 spline PEM Trac Loc Center Section 9" Ford with Premium STG Gear