Don’t know about your BB – I
Don’t know about your BB – I don’t think they’ve changed the thread specification – but you’ll certainly need to respace your dropouts at the rear, as a six speed hub is a different width to a nine. There’s two ways to deal with that: the proper way, which involves a framebuilder and some money; and the ‘home workshop’ way, which involves a vice and some swearing… 👿 👿