Hey,looking in the ORD 9 G-749 manual ,the Cover,cargo body ,Top,M 135 ,pt# 7411556 is a 1 pc unit with only the rear of the truck having a Curtain,end,51 1/2 x 82 3/8 in. (cargo body) M 135 part # 7411557. In a million posts I could never get those 2 part #s to line up like that again. Maybe...