Join Date: Mar 2007
Location: Dayton, WA from Othello, WA
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If it's original it's a Dana 44 or 60 if it's a heavy K2500. Look for a 44 or 60 cast in the lip on the bottom edge of the differential, not sure if it's on the front side or backside, but it's down there.
Oh, and the SFA forum, next one down in the index is the one you'll want to ask aymore questions in. No worries though.
Sierra Classic 2500HD SLT, 4x4, EC/LB, LBZ/Allison
, Summit White with Charcoal Leather, dealer installed Westin Platinum Series bars and a Line-X.
R.I.P. Jason (willyswanter) Payne