New guy in Gila Bend, Az.

[Dozerfixer]

Hey ya' all. Sounds like this is a cool place. I signed up 'cause I have a problem with identifying what rear end I have in my ole' 64 C10. I have every reason to believe it's stock but when I ordered new gears they wouldn't fit! I check with Richmond Gear and we came up with no answer. I seem to have the only 1 with an 18 spline pinion. That's not a problem but finding a gear combo. that will fit is. The #'s on the axle housing are WE 10 24. On the gear case itself there is 3838227. Anybody got any idea. I have a parts truck that has what seems to be an identical rear end but it has thick shims for the carrier. My driver truck has like 35 thousand thick so I can't shift it far enough to the left to set up the backlash. HELP!!!! Thanks, Ed in Az.