Ford (Eaton) Trac-Lok limited slip Differential
1 Differential Case 4204
2 Rear Axle Differential Clutch Shim 4A324
3 Differential Clutch Pack 4947
4 Differential Pinion Thrust Washer 4230
5 Differential Pinion Gear 4215
6 Differential Clutch Spring 4214
7 Differential Side Gear 4236
8 Differential Pinion Shaft 4211
9 Differential Pinion Shaft Lock Pin 4241
For more info, read this:
http://www.fordf150.net/forums/viewtopic.php?p=507588#507588 
