Severe service aluminum case (3.812" bore), lightweight steel spool, pinion yoke, ball / tapered bearing pinion support, large pinion 10" pro gear, transporter, 3 quarts of gear oil. Price can vary with different manufactures brand gears. 

Aluminum through-bolt case, locker, pinion yoke, tapered / tapered pinion support, 9" 8620 gear, transporter and 3 qts of gear lube

Aluminum case, aluminum spool, pinion yoke, ball / tapered bearing pinion support, 9" Ford standard pinion pro gears.

Aluminum case, aluminum spool, ring gear bolts, ball / tapered pinion support, coupler, standard pinion gear, transporter, and 3 quarts of gear oil

Aluminum case, lightweight steel spool, pinion yoke, ball / tapered bearing pinion support, large pinion pro gear, transporter, 3 qts gear oil

Aluminum case, aluminum spool, pinion yoke, ball / tapered pinion support, standard pinion pro gear, transporter, 3 quarts of gear oil

Aluminum case, lightweight steel spool, pinion coupler, ball / tapered pinion support, large pinion pro gear, transporter, 3 quarts gear oil

Aluminum case, lightweight steel spool, MW pinion yoke, ball / tapered bearing pinion support, large pinion pro gear, transporter, and 3 quarts of gear oil

MW nodular iron case, standard spool, stock Ford yoke, tapered / tapered pinion support, ring and pinion

Nodular iron case, 3.062" bore, locker, Ford pinion yoke, tapered / tapered pinion support, 8620 gears, transporter, and 3 qts of gear oil

Aluminum case, lightweight steel spool, MW pinion yoke, ball / tapered bearing pinion support, standard pinion pro gear, transporter, and 3 quarts of gear oil

Aluminum case, clutch-type posi unit, Ford pinion yoke, tapered / tapered bearing pinion support, 8620 gears, transporter, 3 quarts of gear oil.