Pretty much any 3 blade AYP deck made between 95-05 should hook right up to that mower with the correct drive belt used. I know of 44", 46", 48", 50" and 54" decks. The 54" deck would also need the lift arms swapped out since it used different ones, but the rest all used the same mounting hardware as far as I know. I can't really help much with model numbers.