We used to outsource auto rebuilds so I never really fiddled with autos other than normal band adjustment and filter changes but I believe they are interchangable?? Not 100% sure though.
Yes they are interchangeable, I have tried to do it myself but ran into trouble with a big O ring that is impossible to hold in place when bolting up the new bell housing , so off to an auto specialist and had it done for $30 , he even replaced the reverse plates because mine were stuffed, and still only charged $30 , Trev .
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Woofto Car Club Member No3