The RIC-79-0079-1 is a Richmond Gear 4.29 Ratio Large Stem (35 spline) Pro Gear for a 9" Ford.
Basic Specs:
Ring Gear: 30 teethLarge Stem Pinion: 7 teeth on gear with 35 spline count for yokeRatio: 4.29Gear Material: 9310 (Recommended for Drag Race Use, designed to handle shock load but limited wear resistance)