Complete Rear End for 69 Dart

I am in SW Michigan and am looking for a complete 8.25 or 8.75 rear end to fit a 1969 Dart (to replace a 7.25). It doesn't have to be completely restored/rebuilt, but would like something that could be rebuilt with some elbow grease. Preference would be somewhere in the neighborhood or 3.23 or 3.55, but I'm willing to change them out.

Thanks.