Pretty much all e250 and e350 vans came with Dana 60’s. They are very common and cheap. They do have 3.5”x3/8” wall tubes though. I just finished one for my truck. It came with 4.09 years and then used dr. Diff housing ends and spool with strange 35 spline axles and the brakes off of the 8 3/4. It believe it weighed 62lbs. more than the 30 spline 8 3/4 with a spool.