Go here and see if any of the diff diagrams match yours.
http://www.richmondgear.com/01gm.html
Let me know how it goes.
__________________
Sean 
1965 Chevy C10 Fleetside | 350 4bbl | duals w/headers & Flo-Pros | 2004R with B&M 4sp shifter | 3.73 12-bolt
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