Dana Corp made several different Dana 60 size axle tubes and housings for trucks and cars.
The most common size axle tube diameter in 3/4 ton pickup is either 3.0, 3 1/8 or 3 1/4 inch (found on Dana 60 HD housings) diameter. I have a Dana 60-2 housing that was in a 4x4 front end that has 2.5 inch O.D. axle tubes shock
All of the car axle housings made for Mopar I've seen or heard of are 3.0 inch O.D..
I have had several 3/4 ton and 1 ton truck housings cut down to use in my own cars that where 3 1/8 inch O.D axle tubes that worked out fine with stock type leaf spring perches up scope
My message is look for one of the 3/4 ton with the 3.0 inch diameter axle tubes in them first if you want to narrow and bolt them in for a stock type use up
I use the Moser 8 3/4 axle bearings ends from Summit for all the Dana 60 housings I have cut down up

Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)