Rear axle swap for 68 C20
 

I just did a search and didn't get a answer, so here's the question. I've got a 68 C20 with a 4:57 Dana leaf springs and a 327. I want to with a 3:53 or 3:30. The most I want to do is swap backing plates and drums and go. What years will bolt in?
Larry
68 C20 327/465 daily driver work truck
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