Update; I got a message from Sid (Sids dropped axles) today.He mentions that it is not required to weld c-nothes in the rear frame rails when lowering an AD 3 or 4 inches.Offcourse when everything else is kept Stock with no leafs removed and shocks kept Stock. He means that there will be anough clearance between the axle and frame and that it wont give any problem. Martinius.