Sold!
98-08 4T65 HD differential
This includes the differential, housing and output shaft.
All parts have 60k Miles, and are in great condition.
In order for this to be a "Complete Upgrade" for your non-HD trans, you will need the passenger side CV shaft from a GTP. It is a shorter axle than the non-hd cars have. Rockauto carries these for $45.
It has been cleaned a bit and boxed up since this picture was taken:
ZZP Sells their HD Diff upgrade kit for $379.99 plus $25 shipping!
$SOLD!
Located in Omaha, NE