I am still running a Dana 60 in my Challenger. However, mine is an old 1 ton Dodge Ram axle I cut down and narrowed. They have thicker wall tubes. If I remember correctly they are 3/8" or 1/2" wall thickness. Also added ultra light weight spool, 40 spine gun drilled axles with 5/8" studs. Billet custom made caps and girdle support rear cover as well as additional structured welded/bracing to housing. Going to be hard to break or bend it.

Funny thing is all of my buddies that run 9" never swap the center sections once a gear ratio is chosen, so the simplicity of just being able to swap center sections never helps.