42" - 48" mower mandrels

[Brettw 389]

Are the mandrels, towers, shafts and bearings the same on a 42" LH discharge deck from the early 70's the same as the mandrels assemblies on a 48" early eighties deck? In other words, are they interchangeable. I believe both decks have the 5-1/2" driven pulley. Thanks in advance

[larry8200 0]

I think after the 700/7000 series in 78 they made a lot of deck changes including shorter arbors (mandrels) and 1 bolt "gull wing" blades