can anyone help with this one ? I asked TIC if their disc-brake conversion would fit on my 86" series one and the reply is here Thank you for your e-mail. If SIII wheelhubs and drumbrake parts like backplate and drum fit to your axle I think our system will also fit. I have very little expeiance with SI so I am not 100% sure.
Trouble is I don`t know the answer to that question either! Help !