MW nodular iron case (3.250" bore), standard spool (28, 31, 35 or 40 spline), 1350 series stock ford (28-spline) MW pinion yoke, tapered / tapered pinion support, standard 8620 gear. All MW thirdmembers include shipping / storage transporter and 3 quarts of gear lube (72 lbs) Service instructions can be found on Service Bulletin #0038.