"Here is a Hard to Find Bagging System, Bundle Number BM18623, that is designed to fit on Sabre Model 1338/1538/1546//1638/1646 Tractors with 46' Mower Decks. This Bundle contains the Cover, and Mounting Brackets, as well as the Powerflow.THE BAGS AND CHUTE ARE NOT IN THIS KIT."

Here is a link that might be useful: John Deere BM18623 Bagging System for Sabre Tractors