Manufacturer: PEM. Differential Case - Tru Trac - Assembled - 3.70 Ratio - 31 Spline - Steel Spool - Natural - Ford 9 in - Each.
PEM 9in Center Section Eaton Tru Trac 3.70 Ratio CSTT31-370
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