got a problem!

damm that sux...get with the original owner,,let us know what he says

go to the Auburn website, they list the bearings you need to put an older diff in a newer rearend.

ok....i got my stock shit back in until i figure this shit out.......got my parts infront of me and took some pics.......
part number on detroit....looked it up on summit Detroit Locker 913A481 - Eaton Detroit Truetrac Differentials - Overview - SummitRacing.com
http://i123.photobucket.com/albums/o...n/IMG00065.jpg
bearing i was sent with true trac ac delco part number 942-0095
http://i123.photobucket.com/albums/o...n/IMG00058.jpg
http://i123.photobucket.com/albums/o...n/IMG00059.jpg
delco bearing on left ....bearing from install kit on right....notice size difference
http://i123.photobucket.com/albums/o...n/IMG00060.jpg
bearing from kit fits in housing but inner is to large for tru trac....
http://i123.photobucket.com/albums/o...n/IMG00061.jpg

Thats most likely a 88-98 truetrac, smaller journal size.

the part num pulls up from 96-07

found this on jegs------------All GM 8.5"/8.6"Eaton differentials require special bearings. For 28 spline axles with small bearing bores (race O.D. of 2.89"), usually found on vehicles prior to 1999, bearing LM-102949 and race LM-102911 are required. For 30 spline axles with large bearing bores (race O.D. of 3.06"), usually found on vehicles from 1999 to present, bearing LM-603049 and race LM-603012 are required. Will fit 2005.5-07 SAAB 9-7x

Go to your local auto parts store and look at bearing LM102949 and LM102911 to see if those are the ones you need to put that diff in your truck.

LOL, you found it, too.

ok i am pretty sure i need
bearing LM-603049 it has a 1.6250 bore to fit the trutrac
race LM-603012 it has a 3.0625 outer diameter to fit in my housing

i hope thats all i need?

make sure your axles fit it before you waste time getting the right bearings.

why wouldnt the axles fit? diff spline count? both my truck and the tru trac are 30 spline