REAR END - What to get

[51panel]

I am back at it. Have 51 panel. This is going to be my daily driver year round. Want to get newer rear end. Will only pull trailer once a year for 10 miles so don’t need heavy duty or geared. Have a small block 350 with auto trans. Want to get as good as mileage as possible. Have been watching this site for a while and still I have not read a good fit for this width (61” to 62” drum to drum). Does anyone know what newer car or truck – 1990 to 2000 rear end will match up? Drums or disc I don't care. I don’t want to start cutting axles or tubes. I do plan on putting air bags on this, and realize that brackets will have to be made. After I get rear end (I will then know bolt pattern) I can order my IFS. Thanks any help would go a long way.