Shock ripped off mount! Rear! Advice needed

Hello all, My Shock ripped off mount (were the trunk mounts are)! The guy I bought it from welded tabs to the axle but used the stock length shocks. You can imagine what happened when he went through a dip. Should I keep the tabs on the axle or go with the stock spring mounts. If I keep the tabs, does anyone know of any shorter (cost effective) shocks for the rear 1973 Duster?

Thanks
B