Spool made in the USA. Tom Reider was the founder of Precision Gear. He began racing in the 1950’s and raced until 1986 when he started Precision Gear. You must have the matching ring & pinion since the offset is different than other manufacturers.
Precision Gear Ford 9 inch 31 Spline Offset Spool Ultralight Series /Xtreme Gear
Precision Gear Ford 9 inch 4.63 Ring & Pinion with 31 Spline Spool Ultralight Se
Precision Gear Ford 9 inch 4.30 Ring & Pinion with 31 Spline Spool Ultralight Se
Precision Gear Ford 9 inch 4.71 Ring & Pinion with 31 Spline Spool Ultralight Se
Precision Gear Ford 9 inch 4.11 Ring & Pinion with 31 Spline Spool Ultralight Se
Precision Gear Ford 9 inch 5.14 Ring & Pinion with 31 Spline Spool Ultralight Se