71 Duster 360 (new project)

Talked to Doctor Diff a couple of times today...apparently Strange screw up....suppose to be 2.4 inches from snap ring on bearing to outside of axle flange...only 2.20 which is an A body offset instead of the 2.4 inch offset for the B body axles....he having strange drop ship the parts to me....spacers need to pressed on with axle bearing ....