2nd Gen Diff
Diff is fine, all the seals are new, the bushing is brand new (looks dirty from installation). You should install a new crush collar and torque the pinion end on again before installing on car.
Here is the link: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=141079971223&ssPageName=STRK:MESE:IT
For your reference, here are the different generations:
1st --- 10361308
2nd--- 10368780
3rd--- 15793756 installed in '06 & '07.
4th--- 25873498 was released in 2008 for a slight improvement over 15793756 which was installed in the '06 &'07.

