Re: Which rearend fits a 46
If you still have the stock rear, measure it over the drums and you should get something around 60". This means a G-body will be somewhat too narrow, but it should work ok if you are wanting the deep wheel look. For a closer match to stock, look at 68-74 Nova, 1st gen Camaro, or 4WD S-10. Early Chevelle will work too, if you don't mind dealing with the suspension brackets and lugs. I have used 55-57 passenger car rears in these trucks, but those are getting rather scarce/pricey now.
On a related issue, the stock front track is about 2-1/2" narrower than the rear, so keep this in mind if you are going to an IFS and you want the F&R track to match.
Ray
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