Excellent Completely cleaned " tumbled not sand blasted "(cast blast painted) and professionally rebuilt by a Corvette only high performance rebuilder. Both kits ( everything period ) including clutch pack kit 12-22-66 dated rear differential. AM code 3.36 small block. Has GM 3.55 gear set in it now but I also have the original GM 3. 36 gear set that came in it and they are in great shape. Will have the 3.36 put back in it if thats the ratio you want. No side yokes or rear cover are included but I have them if you need them. 27 spline pinion yoke is included. Will sell with good rebuildable core exchange (66-67) or no core. Sold the car in Kissimee,Fla January NCRS show that this rear was going to go in. 1 year warranty is included.